What is the main idea of this text? Before the invasion, scientists developed computer models to predict the effect of the zebra mussels. But they were still surprised by what happened. By 1992, there were so many zebra mussels, scientists estimate
they were filtering a volume of water equal to all of the water in the estuary every 1-4 days during the summer. In the years right after the invasion, phytoplankton fell by 80 percent. Zooplankton (which eat phytoplankton) declined by half. And the smallest zooplankton (called micro-zooplankton), fell by about 90 percent. By 1994, scientists hypothesized that zebra mussels were responsible for these changes. The mussels were filtering huge amounts of phytoplankton from the water. Less phytoplankton meant less food for zooplankton, so their numbers were shrinking too. Competition was taking place and the
zebra mussels seemed to be winning.
A. In the years right after the invasion, zebra mussels evolved and adapted to the Hudson River ecosystem.
B. In the years right after the invasion, zebra mussels caused a number of changes in the Hudson River ecosystem and food web.
C. In the years right after the invasion, zebra mussels did not have a major impact on the Hudson River ecosystem or food web.
D. At first, zebra mussels did not have any impact on the Hudson River ecosystem, but their impact increased over time.
please help me I will give out the brain thing and extra points.

Answers

Answer 1

Answer:

B

Explanation:

I don't really know to be honest. I would guess it's B because it mentions the impacts, such as increased population in the mussels and decrease in zooplankton and phytoplankton.

Answer 2
Answer: b.)
Explanation: if you read the story throughly, it tells you that zebra mussels had an impact on the food web & a number of changes in the hudson river ecosystem. b was the only option that thoroughly & correct stated the main idea of this passage. the rest of the options either don’t give enough or give incorrect information about the main idea. hope this helped (:

Related Questions

Hello can you help me please thanks!

How small are the microorganisms that live on the human body? *

Answers

Answer:

They are about 1/10th the size of a typical human cell. Microbes are generally measured in the scale of one millionth of a meter, which is known as a micrometer.

Explanation:

The human body contains trillions of microorganisms- out numbering human cells by 10 to 1. Hope this helps! :)

Are strawberry spiders poisonous?


I’m not sure if this is biology or not

Answers

Answer:

No.

Explanation:

I think they are harmless.

nope, they are harmless

Justin designed an experiment to find out how running up bleachers affects his heart rate. First he records his resting heart rate and then runs up the bleachers 10 times. Each time he reaches the top, he records his heartrate then rests 20 minutes.

Which is involved in Justin's experiment?

replication
repetition
both repetition and replication
neither repetition nor replication

Answers

Answer:

I believe it's only repetition which is doing the experiment over and over again.

Explanation:

Replication on the other hand would be if he was repeating some one else experiment with the same guidelines.

replication is the answer that i got

Different factors influence the THIS IS ALREADY 3 DAYS LATE AND I HAVE A F SO PLEASE movement and direction of ocean currents. The following man shows antivo major surface curants in the ocean,
What factor causes surface currents north and south of the equator to move in different directions
1. The suns energy
2. The coriolis effect
3. The destiny of water
4. Continental definition

Answers

Answer: 2. The Coriolis effect

Explanation: Wind or water that travels toward the poles from the equator is deflected to the east, while wind or water that travels toward the equator from the poles gets bent to the west. The Coriolis effect bends the direction of surface currents to the right in the Northern Hemisphere and left in the Southern Hemisphere.

Hope this helps! :)

2. The Coriolis effect

Photosynthesis below using your notes. Then fill in the blanks in the sentence.

______+_______→ _______+_______

In the process of photosynthesis, ________ energy is transformed into __________ energy.

alot of pointz

Answers

Answer:

Explanation:

Photosynthesis is the process by which plants, some bacteria, and some protistans use the energy from sunlight to produce sugar, which cellular respiration converts into ATP, the "fuel" used by all living things. The conversion of unusable sunlight energy into usable chemical energy, is associated with the actions of the green pigment chlorophyll. Most of the time, the photosynthetic process uses water and releases the oxygen that we absolutely must have to stay alive. Oh yes, we need the food as well!

We can write the overall reaction of this process as:

Sunlight + Carbon Dioxide + Water → Oxygen + Glucose

In the process of photosynthesis, light energy is transformed into chemical energy.

Please hurry I need help with this I will give out extra points and the brain thing.
Once scientists understood the short-term impact of the zebra mussel invasion, they started to wonder about the invasion's long-term impact on the ecosystem. Why might the Hudson River ecosystem look different many years after the zebra mussel invasion than it did just a few years after the invasion?

Answers

Answer:

In spite of their small size (often no bigger than a penny) zebra mussels cause far-reaching damage to water structures and native ecosystems. They also negatively impact aquatic ecosystems by harming native organisms. In huge numbers, they out-compete other filter feeders, starving them.

The Hudson River ecosystem might look different many years after the zebra mussel invasion than it did just a few years after the invasion due to the cascading effects of the invasion on the ecosystem.

What is The Hudson River ecosystem?

The Hudson River ecosystem is a complex and diverse network of living and non-living components that includes everything from microorganisms and plankton to fish, birds, and mammals. The ecosystem is influenced by a range of natural and human-made factors, including climate, water quality, land use, and pollution.

It supports a variety of important ecological, economic, and cultural services, including fisheries, recreation, transportation, and aesthetic value. However, the ecosystem has also faced a range of challenges, including habitat destruction, overfishing, pollution, and invasive species, such as the zebra mussel.

For example, zebra mussels are filter feeders that can dramatically reduce the amount of plankton in the water, which can in turn affect the entire food chain. Over time, these changes can lead to a shift in the species composition and overall structure of the ecosystem, which may be evident many years after the initial invasion.

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What body part contains epithelial tissue, in your answer, explain how cell arrangement helps this body part perform its function.

Answers

Answer:

Epithelial tissue covers the outside of the body and lines organs, vessels (blood and lymph), and cavities. Epithelial cells form the thin layer of cells known as the endothelium, which is contiguous with the inner tissue lining of organs such as the brain, lungs, skin, and heart.

explain how cell arrangement helps this body part perform its function. :

Its tightly packed cells allow for protection against harmful substances.

Explanation:

Epithelial tissue covers the outside of the body and lines organs, vessels (blood and lymph), and cavities. Epithelial cells form the thin layer of cells known as the endothelium, which is contiguous with the inner tissue lining of organs such as the brain, lungs, skin, and heart. The free surface of epithelial tissue is usually exposed to fluid or the air, while the bottom surface is attached to a basement membrane.

The cells in epithelial tissue are very closely packed together and joined with little space between them. With its tightly packed structure, we would expect epithelial tissue to serve some type of barrier and protective function and that is certainly the case. For example, the skin is composed of a layer of epithelial tissue (epidermis) that is supported by a layer of connective tissue. It protects the internal structures of the body from damage and dehydration.

Epithelial tissue also helps to protect against microorganisms. The skin is the body's first line of defense against bacteria, viruses, and other microbes.

Epithelial tissue functions to absorb, secrete, and excrete substances. In the intestines, this tissue absorbs nutrients during digestion. Epithelial tissue in glands secrete hormones, enzymes, and other substances. Epithelial tissue in the kidneys excrete wastes, and in the sweat glands excrete perspiration.

Epithelial tissue also has a sensory function as it contains sensory nerves in areas such as the skin, tongue, nose, and ears.

Ciliated epithelial tissue can be found in areas such as the female reproductive tract and the respiratory tract. Cilia are hair-like protrusions that help propel substances, such as dust particles or female gametes, in the proper direction.

Epithelial tissue is composed of cells laid together in sheets with the cells tightly connected to one another. Epithelial layers are avascular, but innervated.

Describe how the bowling pin will react to the unbalanced force of the bowling ball.

Answers

Hahahahahahahahaha it will be hit
The fourth of the bowling ball would cause the bowling pin to knock down because you hit it

I need a lot of hlp ill give brainliest plz help : (
At one time, people believed that living things could develop from nonliving matter, an idea known as spontaneous generation. Which of these ideas has replaced the idea of spontaneous generation?
A.Cells are the basic units of structure and function in living things.
B.All living things are composed of cells.
C.All cells come from pre-existing cells.
D.All matter is made up of atoms.

Answers

D. All matter is made up of atoms

Which of the following is an example of conduction?
Warm air in the atmosphere rises.
Solar energy warms rock on Earth's surface.
Magma warms rock with which it comes in contact.
O Cool ocean water sinks below warm ocean water.
PLEASE HELP I HAVE A F IN SCIENCE THE O ARE EACH ANSWER CHOICE

Answers

Answer: Magma warms rock with which it comes in contact.

Two brown-eyed parents can produce a child with blue eyes. Which of the following best explains how this is possible?
A. Blue eyes are an adaptation that can help the survival of humans.
B. Over many generations some characteristics become more frequent.
C.Eye color is always a mixture of the traits of both parents.
D.The genes passed on by the parents can combine in a new way in the child. help again please im kinda stupid-

Answers

Answer:

d

Explanation:

if i am wrong dont come at me

Genes passed down from parents can combine in a child in a new way to best explain it.

What are the functions of genes?

A gene is the basic physical and functional unit of heredity. Genes are made up of DNA. Some genes act as instructions for making molecules called proteins. However, many genes do not code for proteins.

Our genes carry information that is passed down from  generation to generation. For example,  one child has blonde hair like his mother because of his genes, while his siblings have brown hair like his father.

Genes contain instructions that tell your cells to make molecules called proteins. Proteins perform various actions.​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​

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how can power plants be created in ways that reduce pollution

Answers

Answer: use solar energy then

Explanation:

I can not help you at the moment

Based on what you have learned, write two or three sentences explaining how the energy in fossil fuels is converted to electricity.
Sample Response: Fossil fuels are burned to heat water and create steam. Moving steam turns turbines, which generate electricity.

Answers

Answer:

Fossil fuels are burned to heat water and create steam. Moving steam turns turbines, which generate electricity.

Explanation:

sample

Fossil fuels are rock-like, gas, or liquid resources that are burned to generate power. They include coal, natural gas, and oil, and are used as an energy source.

What do you mean by fossil fuels?

Fossil energy sources, including oil, coal and natural gas, are non-renewable resources that formed when prehistoric plants and animals died and were gradually buried by layers of rock.

When fossil fuels are burned, they release large amounts of carbon dioxide, a greenhouse gas, into the air. Greenhouse gases trap heat in our atmosphere, causing global warming. Already the average global temperature has increased by 1C.

Coal, petroleum (crude oil) and natural gas are easy to use for everyday needs that include electricity generation, heating, and transportation. Fossil fuels have become a dominant energy source because they contain a lot of transportable energy in a small package.

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give one example of an unbalanced force

Answers

Answer:

not thano's plan

Explanation:

Pushing a couch across the room is unbalanced. You have the force in the couch that is normal force and friction as you push it, but the force you is stronger so it is unbalanced.

Which of the following best identifies a way in which organs in an organism are similar to organelles in a cell?

A. Both are made of tissues.
B. Both carry out specific functions.
C. Both carry out chemosynthetic reactions.
D. Both are found in single-celled organisms.

Answers

Answer:

A

Explanation:

Both are made of tissues.

The organs in an organism and organelles in a cell both are similar as they both are made up of tissue. Thus, option A is correct.

What is tissue?

The tissue is defined as a group of cell added together to form a tissue present in body and plays a vital role in covering of all internal as well as external area and organs of body, hollow organs and body lines cavity.

The structure of epithelial cells are they combined together by fitted junctions as well as adhering junction and attached to extra cellular matrix.

Tissue is the compact structure of cell and later tissue combined together to form organ and than organ system is formed to perform various functions of the body.

Therefore,the organs in an organism and organelles in a cell both are similar as they both are made up of tissue. Thus, option A is correct.

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True or False an overtone occurs when two or more sound waves are produced at the same time.

1. True.
2. False

Answers

Answer:

True.

Explanation:

An overtone is any frequency greater than the fundamental frequency of a sound.

Overtone, in acoustics, tone sounding above the fundamental tone when a string or air column vibrates as a whole, producing the fundamental, or first harmonic. If it vibrates in sections, it produces overtones, or harmonics. The listener normally hears the fundamental pitch clearly; with concentration, overtones may be heard.

Some organisms can reproduce both sexually and asexually, explain why this strategy would be beneficial.

Answers

Answer:

The benefits of sexual reproduction:  

In the offspring, genetic variation produces

Due to variation, the species can adapt to new environments, giving them a survival advantage.

a disease is less likely to affect all the individuals in a population

Explanation:

Sexual and axe dual reproduction can both be beneficial. Sexual reproduction allows for variation amount offspring, whereas asexual reproduction allows for offspring to be identical to the birth mother.

At night, the air is usually cooler than it is during the day, Which term is best
defined as a measure of how hot or cold something is?
1. heat
2. temperature
3. kinetic energy
4. thermal energy

Answers

2 or 4 good luck I might be wrong tho :)
The correct answer is Temperature

Which of the following accurately describes the word equation for photosynthesis? *

A.) Glucose + oxygen ---- > carbon dioxide + water + energy (ATP)
B.) Carbon dioxide + water ---(light energy)---> glucose + oxygen
C.) Glucose + water -----> oxygen + carbon dioxide + energy (ATP)
D.) Carbon dioxide + energy ---(light energy)---> oxygen + water + glucose

Answers

Answer:

Carbon dioxide + water + energy from light produces glucose and oxygen.

so B

Co2 + h20 —( light energy—- c6H12O6 + o2

Can you see an individual atom?

Answers

Answer:

You can not see them with the bare eye, but you can see them using a very powerful microscope.

Explanation:

Answer:

No, you can't at least not without using an intensely powerful microscope.

Explanation:

Which of the following best describes the products of photosynthesis *

A.) Carbon dioxide + water
B.) Oxygen + carbon dioxide
C.) Glucose + oxygen
D.) Energy + water

Answers

C glucose and oxygen
it would be c because carbon dioxide,water,and sunlight yield glucose and oxygen:) hope this helps!

Which protist is characterized by a pseudopod?
A.euglenoid
B. slime mold
C. ciliate
D. sarcodine

Answers

Its Gotta Be B I Think ?

Answer:

its d

Explanation:

On edge 2021

Help on science McGraw hill!!!!

Answers

This person is incorrect

which example is NOT a basic need of all organisms?
A. WATER
B. APPROPRIATE ENVIORMENT
C. FOOD
D. SOIL

Answers

The answer is b hfhrhrhfhgfjfjfjfhff

Answer:

D. Soil

Explanation:

All organisms need food, water, air, sunlight, and the right habitat.

how does thermal energy is transferred from land and water to lower layers of Earth's atmosphere. How does this energy impact the lower layers of atmosphere?

Answers

The guy above is right

The offspring of sexually reproducing organisms can be distinguished from the offspring of asexually reproducing organisms by studying which of the following?

A.The average amount of time involved between fertilization and birth of the offspring
B.The relative sizes in height of the organisms when they reach adulthood
C.The extent of variety in the genetic information in the population of offspring
D.The diet and habitat requirements for each individual organism YALLL ANSWERRR PLZZ ITS DUE TODAY LOLLLL

Answers

Answer:The extent of variety in the genetic information in the population of offspring.    

Explanation:C is correct

Your Mom is growing zinnias in her garden. Zinnias are grown all across the southern part of the US and come in many sizes and shapes. You notice in your mom's garden there are lots of differences in the zinnias there. Why are these zinnias so different?
A) The zinnias grew in different types of soil.
B) The zinnias had different amounts of sunlight.
C) The zinnias got different amounts of water and fertilizer.
D) The zinnia plants received different inherited information.
Please help me I will give out the brain thing and extra points.

Answers

I believe its D because each Zinnia has their own genes. Not all plants are clones/the exact same from one another.

You notice in your mom's garden there are lots of differences in the zinnias there. These zinnias so different because the zinnia plants received different inherited information. Thus, option D is correct.

What is leaf?

Leaf has been known as a very important part of plant and it contains chlorophyll due to which the color of leaf has been green. It has a flattened green structure which has been grown outwards from the stem of a plant which has vascular.

Leaf has been known as the basic site of photosynthesis it means the process of photosynthesis occurs in leaf. The main function of leaf has to produce food material for plants which will help plants to get nourished.

There are mainly two types of leaves and these are simple and compound leaves. The simple leaf is one in which single lamina has attached to the stem by the help of petiole and compound leaf is the one in which lamina has been divided into leaflets.

Therefore, You notice in your mom's garden there are lots of differences in the zinnias there. These zinnias so different because the zinnia plants received different inherited information. Thus, option D is correct.

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I will give you brainliest if you answer this... How come the word "moist" is such a weird word?

Answers

Explanation:

Because of how it sounds. Because of its connotations to bodily fluids. Because they're socialized to believe the word is disgusting.

because it sounds weird and icky

Use 3 different vocabulary words to describe the niche of a mushroom in a food chain.

Answers

hope this help :))))))

I don’t care I just want free points

Which stages does liquid water from the ocean turn into water vapor?
O condensation
O evaporation
O precipitation
O run off

Answers

Answer:

evaporation

Explanation:

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What can very old clouds do? Construct a paragraph with 4 sentences. a runner covers the last straight stretch of the race in 4 s. durning that time, he speeds up from 5 m/s to 9m/s what is the runners acceleration in this part of the race? Please do this i will give brainlyist and 5 starWriting Prompt:What is the central idea of the article "How Jackie Robinson Changed Baseball"? Write a CCC (claim, claim evidence, and commentary) paragraph in which you explain with evidence and commentary the central idea of the text and the text evidence used to support that central idea what is the relationship between velocity and kinetic energy? Is the relation a function?O YesO NoO Cannot be determined 5. The United States Air Force has 19 women for every 81 men enlisted. what is the ratio of men to women. Suppose that 19 inches of wire costs 76 cents. At the same rate, how many inches of wire can be bought for 48 cents? Emotional connection In Passage 1, how does Mrs. Reed respond to Jane's outburst at the beginning of the excerpt?1: as though she is a childlike she is a wounded animal2: like she is an adult anniversary3: as though she is an adult friend4: as though she is a child Economies of scope A. are cost reductions that flow from cost-saving strategic fits along the value chains of related businesses in the business lineup of a multibusiness corporation. B. arise only from strategic fit relationships in the production portions of the value chains of sister businesses. C. are more associated with unrelated diversification than related diversification. D. are present whenever diversification satisfies the attractiveness test and the cost-of-entry test. E. arise mainly from strategic fit relationships in the distribution portions of the value chains of unrelated businesses. The population of a large U.S. city is2,707,210. Which of the following best expresses this population? the log ride at an amusement park has a single hill with an incline of 127 feet and a decline of 93 feet. If the total horizontal distance between the start of the incline and end of the decline is 132 feet, find the maximum height of the ride In order to avoid slipping in the shop, your footwear should ___________. Social Media, Inc. (SMI) has two services for users. Toot!, which connects tutors with students who are looking for tutoring services, and TiX, which can be used to buy, sell, or exchange event tickets. For the following year, SMI expects the following results. Toot!TiXTotal Users 8,900 16,600 25,500 Revenues$1,450,000$1,200,000$2,650,000 Engineering hours 7,375 5,375 12,750 Engineering cost$402,500$521,875$924,375 Administrative costs $739,500 Required: a. Compute the predetermined overhead rate used to apply administrative costs to the two services assuming SMI uses the number of users to allocate administrative costs. b. Based on the rates computed in requirement (a), what is the profit for each service? Which of the following was NOT one of the the ninja turtles named after a Renaissance artist I WILL MARK YOU AS BRAINLIEST IF RIGHT In order to climb up a mountainside, a train needs to start at a speed of 40 mph. The speed limit on the track, however, is 25 mph. How much time does the train need to get up to 40 mph if it can accelerate 4 mph per minute ? what fraction is equal to 6 carbon has three naturally occurring isotopes: carbon 12, carbon 13, carbon-14 which of these statement are true about carbon and its isotopes please help!!!!! I don't understand What is the kinetic energy of a 2,000 kg boat moving at 5 m/s Subject: Science