Answer:
Your answer is:
a) most pollution occurs in the ocean.
when does the embryo form?
A. At the end of the third trimester
B. A few days after fertilization
C. In the second trimester
D. At the end of the first trimester
during which phase of the cell cycle does mitosis occur
Answer:
The M Phase
Explanation:
The process of mitosis, or cell division, is also known as the M phase. This is where the cell divides its previously-copied DNA and cytoplasm to make two new, identical daughter cells.
Counterclockwise rotation of the flagellum causes a bacterial cell to swim or ______ towards a stimulus, interrupted by clockwise rotation in which the cell ______ and changes its course.
Counterclockwise rotation of the flagellum causes a bacterial cell to swim or run towards a stimulus, interrupted by clockwise rotation in which the cell tumbles and changes its course.
How does a bacterium respond to stimuli?A bacterium is a unicellular organism that posseses a structure called flagellum.
Flagellum in bacteria is a long, whiplike proteinaceous appendage, used for locomotion.
However, a counterclockwise rotation of the flagellum causes a bacterial cell to swim or run towards stimulus. This rotation is interrupted by a clockwise rotation of the flagellum that causes the bacterium to tumble.
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Describe the biological community and an ecosystem to which you belong.
Answer:
All the populations living and interacting within a particular geographic area make up a biological (or biotic) community. The living organisms in a community together with their nonliving or abiotic environment make up an ecosystem .
There are lots of abiotic and biotic factors in our biological community that made up our ecosystem.
What makes a biological community?All the populations living and interacting within a particular geographic area make up a biological (or biotic) community. The living organisms in a community together with their nonliving or abiotic environment make up an ecosystem .
In our community, we are interact with various another species, plants tree on which our life and dependent. Abiotic factor like land, air, water are some of the main abiotic factor which make up our ecosystem.
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13. Which method for producing electricity has had the most negative impact on the
atmosphere?
A burning fossil fuels
B. controlling nuclear fission
C. harnessing wind with windmill farms
D. using hydroelectric dams to block rivers
Helpppp please
Answer:
The answer is A.
Explanation:
One of the downsides to electricity is the way it is generated. Usually, electricity was generated through Coal which as a fossil fuel was pivotal in releasing large amounts of carbon dioxide into the atmosphere.The method for producing electricity that has had the most negative impact on the atmosphere is A) burning fossil fuels.
What is the consequence of burning fossil fuels ?Burning fossil fuels, such as coal, oil, and natural gas, releases large amounts of carbon dioxide and other greenhouse gases into the atmosphere. These gases trap heat in the Earth's atmosphere, leading to global warming and climate change.
In addition, burning fossil fuels also releases other pollutants, such as sulfur dioxide and nitrogen oxides, which can contribute to acid rain and other environmental problems.
While all methods of producing electricity have some impact on the atmosphere, burning fossil fuels has had the most negative impact due to the sheer amount of greenhouse gases and other pollutants that are released during the process.
While there are efforts to reduce the negative impacts of burning fossil fuels, such as developing cleaner burning technologies and transitioning to renewable energy sources, the continued use of fossil fuels for electricity generation remains a significant challenge for addressing climate change and reducing air pollution.
In addition to greenhouse gas emissions, burning fossil fuels also produces other pollutants, such as sulfur dioxide and nitrogen oxides, which can contribute to acid rain and other environmental problems.
Therefore, extraction, transportation, and storage of fossil fuels can also have negative environmental impacts, such as oil spills, groundwater pollution, and habitat destruction.
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62 chromosomes
will be in the skin cells. How many chromosomes
of her offspring?
(3) 31
(4) 30
(1) 124
(2) 62
Will give brainliest for the first answer!!!!
pls help its an emergency!!!!!!!!!!
can someone help fill in this table and the questions thanks so much
During tubular reabsorption, most of the water, glucose, and ions in the glomerular filtrate are reabsorbed into the blood whereas urea is not.
What is tubular reabsorption?Tubular reabsorption refers to.the process whereby minerals and water are reabsorped from the glomerular filtrate into the blood.
The renal artery carries mineral rich, oxygenated blood from the heart to the kidneys whereas the renal veins carry deoxygenated blood from the kidneys back to the heart.
Blood in the renal arteries contains red blood cells, white blood cells, large blood proteins, glucose, water, ions, and urea.
Filtrate in the kidney tubules contains water, glucose, ions, and urea.
Filtrate not reabsorbed is urea.
Urine contains urea, ions and water.
Blood in the renal veins contains red blood cells, white blood cells, large blood proteins, glucose, water, and ions.
Therefore, in the process of tubular reabsorption, most of the water, glucose, and ions in the glomerular filtrate are reabsorbed into the blood whereas urea is not.
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what is the overall reaction ( equation ) for photosynthesis?
Answer:
6CO2 + 6H2O → C6H12O6 + 6O2
Explanation:
The process of photosynthesis is commonly written as: 6CO2 + 6H2O → C6H12O6 + 6O2. This means that the reactants, six carbon dioxide molecules and six water molecules, are converted by light energy captured by chlorophyll (implied by the arrow) into a sugar molecule and six oxygen molecules, the products. Credits to Britannica.com
a group of dead organism gets covered by mud. over long periods, they become fossil fuels. which statement correctly describes how carbon moves in this scenario?
carbon moves from the atmosphere to the geosphere.
carbon moves from the atmosphere to the hydrosphere.
carbon moves from the biosphere to the geosphere.
carbon moves from the biosphere to the hydrosphere.
Carbon moves from the biosphere to the geosphere is the correct statement.
How carbon moves in this scenario?
Carbon moves from the biosphere to the geosphere because the dead organism has carbon in its body and when it is decomposed the carbon goes into the soil.
So we can conclude that carbon moves from the biosphere to the geosphere is the correct statement.
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Which of these is the most likely prediction that the meteorologist would make about the weather? There is a possibility of
precipitation
hurricane
tornado
fair weather
Answer:
Precipitation or Fair Weather
Explanation:
Of these choices, a meteorologist is most likely to predict precipitation. Hurricanes and tornados are relatively rare occurences.
3. What would be an example of deposition?
Answer:
frost
Explanation:
Frost is the deposition of water vapour from humid air or air containing water vapour on to a solid surface. Solid frost is formed when a surface, for example a leaf, is at a temperature lower than the freezing point of water and the surrounding air is humid.
In sub-freezing air, water vapour changes directly to ice without first becoming a liquid. This is how frost and hoar frost form on the ground or other surfaces. Another example is when frost forms on a leaf.
Which is the complementary dna strand to the following: aattcgtaccg
Answer:
The sequence along one strand is the "complement" of the sequence along the other strand, so that when two strands are bonded each base is paired with its complementary partner. A-T-T-C-G-G-A-C-T-A, is paired with this complementary strand: This allows A and T to pair and C and G to pair. Each base hydrogen-bonds to its complementary base.
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Choose all the answers that apply.
Stars:
1are classified by temperature and color
2are made mostly of hydrogen and helium
3orbit the sun
4are mostly found between Mars and Jupiter
5generate their own heat and light
Answer:
The 4th option is wrong . Stars are Mostly found between Mars and Jupiter.
Lake Victoria in East Africa is home to many species of fish called cichlids. In 1954 the predatory Nile perch was introduced to Lake Victoria. The Nile perch became the dominant fish species in the lake by the mid-1980s. The number of cichlid species in the lake decreased as the Nile perch population increased. The perch preyed heavily on cichlid species that fed on algae and debris on the bottom of the lake. Algae in the lake increased, and oxygen levels decreased. The surface area of the gills of some cichlid species has increased in over 20 years.
A. Increased gill surface area has allowed the cichlids to change their diet and avoid competing with the Nile perch.
B. Increased gill surface area has allowed the cichlids to be camouflaged and avoid being eaten by the Nile perch.
C. Increased gill surface area has allowed the cichlids to leave Lake Victoria and establish populations in nearby bodies of water.
D. Increased gill surface area has allowed the cichlids to better absorb the limited oxygen in the water.
Answer:
D. Increased gill surface area has allowed the cichlids to better absorb the limited oxygen in the water.
Explanation:
As the Nile perch fed on cichlid species that feed on algae, algae growth increased in the lake. The algae absorbed more oxygen, leaving less for the fish. Those with larger gills were able to absorb oxygen more efficiently, and were able to survive.
40. during the song oh i just can't wait to be king" the crocodile has birds in its mouth. this is a
symbiotic relationship. what type of symbiotic relationship is it?
describe three scenes from the movie that show the following scavenger behaviors.
The name of the movie is 'The Lion King' and the missing scene here is the song "I Just Can't Wait to Be King" written by Elton John.
A crocodile that has birds in its mouth represents a type of parasitism, whereas scavenger behaviors include:
bearshyenas piranhasWhat is parasitism?Parasitism is a class of symbiotic relationships in which one species is benefited from such interaction and the other species is harmed.
In this case, when the crocodile needs to clean its tooths, it opens its mouth to allow the arrival of birds.
Moreover, scavengers are organisms that eat dead biomass (e.g. dead animals or rotting plants).
In conclusion, although the movie is NOT found here, a crocodile that has birds in its mouth represents a type of parasitism, whereas animals having scavenger behaviors include bears, hyenas and piranhas.
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Why are pigments important to the process of photosynthesis.
Answer:
The importance of pigment in photosynthesis is that it helps absorb the energy from light. The free electrons at the molecular level in the chemical structure of these photosynthetic pigments revolve at certain energy levels.
Explanation:
1. How do you think your organs work together to digest food?
2. What other inventions do you think are based on the functions of the digestive system?
3. How might you be able to tell that enzymes are working in your body?
4. How do different types of food change the number of digestive enzymes present in your body?
Answer:
1. Food moves through your GI tract by a process called peristalsis. The large, hollow organs of your GI tract contain a layer of muscle that enables their walls to move. The movement pushes food and liquid through your GI tract and mixes the contents within each organ.
2.The SmartPill is an ingested, wireless device for measuring the health of the digestive system. As it passes through the digestive tract, the capsule transmits data to a receiver, which is later returned to the doctor and the information downloaded onto a laptop computer.
3. When its not working many of the uncomfortable reactions such as an upset stomach, allergy-like symptoms or irritability are actually signs that the enzymes are working. The body is cleaning itself out and the healing process is starting.
4.One of the main reasons for reduced output of digestive enzymes is poor exocrine pancreatic function. The causes of Exocrine Pancreatic Insufficiency (EPI) are very diverse ranging from: Problems with the endocrine part of the pancreas such as insulin dysregulation from diet high in refined carbohydrates and diabetes.
Explanation:
A person usually experiences small variations in body temperature over a 24-hour period. These variations in temperature are an example of
The small variations in body temperature which a person experiences over a 24-hour period is an example of dynamic equilibrium.
What is dynamic equilibrium?Dynamic equilibrium can be defined as the small variations in the temperature of the body of a living organism over a 24-hour period, which is typically a day.
This ultimately implies that, dynamic equilibrium simply refers to the small variations in body temperature which a person experiences over a 24-hour period.
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Why did the students leave the amylase and starch solutions in the water bath for five minutes in step 3
Answer:
Each enzyme functions at an optimum temperature. Below the optimum temperature, the enzyme's function slows, and will eventually become inactive. Above the optimal temperature, the enzyme's activity will slow. Too far above the optimum temperature and the enzyme becomes denatured (its shape changes) and it can no longer function. Amylase is the enzyme that breaks starch (amylose) down into maltose. The amylase and the starch were placed in the water bath to allow the reaction to occur at amylase's optimum temperature of 37 C.
37. Describe the basic structure of the cell membrane. What is the cell membrane's main function?
Polar bears are believed to have evolved from brown bears 600,000 years ago. Their white fur is an adaptation that allows them to better survive in their snowy environment. This is an example of which mode of natural selection? Explain why you chose this answer.
Answer:
Polar bears have thick, warm, white coats to use as a disguise to sneak up and attack and kill their prey. Overall polar bears have white coats to blend in with their suroundings
Explanation:
what part of the flowering plant becomes fruit
Answer:
The ovary is the part of the plant that becomes fruit.
Whats a independent variable and dependent varivle
Answer: The independant variable is what you change on purpose in the expirament and the dependant is the outcome of the expirament
Explanation:
Answer:
The dependent variable is the one thing that stays the same throughout the experiment.
The Independent variable is the one thing that changes in the experiment.
Example: You are measuring how far a marble will roll off of a ramp. The marble and distance is the dependent variable. The height of the ramp is the independent variable because you change the height every test
Explanation:
the internal motion of particles of matter is called
A. mechanical energy
b. chemical energy
c. electromagnetic energy
d. heat energy
Answer:
the answer is D heat energy
WRITE ABOUT PACKAGING OF DNA DOUBLE HELIX IN EUKARYOTES AND PROKARYOTES
Explanation:
Packaging Of Dna Double Helix:Prokaryotes
↬ No well defined nucleus.
↬ DNA is held with some proteins in nucleoid region.
Eukaryotes
↬ Histones:
↬ Positively charged proteins. ↬ Rich in arginine and lysine. ↬ 5 types:- H₁ H₂A, H₂B, H₃ H₄.↬ Histone octamer:
↬ A pair of 4 histones.↬ Nucleosome:
↬ DNA (-ve charge) makes two complete turns around the histone octamer (+ve charge) to form a nucleosome.Answer:
in prokaryotes there is there is not proper neucloseomw
100 points hurry
Explain at least three pro’s and three cons of invasive species . Three reasons why it’s a good solution and three reasons why it’s not, or what challenges it faces.
Who are the stakeholders (people who would care about this issue)? Include those who are supportive of the solution and how it would benefit the environment, and people who would be opposed to the solution (usually they would lose money somehow). If there are no people opposed, state that.
A biologist has mixed the polysaccharide agarose with other components to create a gel.
Which choice best describes the next step in gel electrophoresis?
A.The mixture is poured into a special tray and allowed to cool and solidify.
B.An electric current is run through the gel.
C.The gel is placed in a box with positive and negative electrodes.
D.DNA samples are loaded into wells.
Answer:
a
Explanation:
n.a
Select the correct answer from each drop-down menu. some vitamins are mostly found in animal-based foods, while some vitamins are abundant in plant-based foods. the best source of vitamin c is , while is naturally rich in vitamin b12.
The best source of vitamin c is strawberries.
Fish is naturally rich in vitamin b12.
What is vitamin?Vitamins are essential substance and mostly plant base substances that needed in small quantities and are consumed by man to improve the healthy wellbeing.
Vitamins can be water soluble or fat soluble.
Therefore, The best source of vitamin c is strawberries.
Fish is naturally rich in vitamin b12.
The question is incomplete as the options are not given, below are the options below.
cheddar cheese, strawberries, lentils Second blank: fish, broccoli, peanut butter
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An acellular entity composed of a small circular RNA molecule without a capsid and capable of replicating its genome is known as
An acellular entity made up of a small circular RNA molecule without a capsid and capable of replicating its genome is known as viroid.
What is RNA?RNA is a complex high-molecular weight molecule that participates in cellular protein production and, in some viruses, replaces DNA as a carrier of genetic instructions.
Viroids are nucleic acid species with a unique structure and low molecular weight that cause a variety of illnesses in cultivated plants. Certain animal and human diseases may be caused by similar nucleic acid species. Viroids are the tiniest known infectious disease agents.
Viroids, unlike viral nucleic acids, are not encapsulated. Viroids multiply autonomously in cells of sensitive plant species, despite their small size.
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what is the main reason equatorial ocean water is warmer than polar ocean water?
O A. Gyres in the northern hemisphere flow clockwise.
O B. The sun heats Earth and its oceans unevenly.
O C. Deep sea vents pump steam into oceans unevenly.
O D. Upwellings spew warm water toward the equator.
Answer:
option B
Explanation:
i think the answer will be B as the sun rays directly hit the earth at the equator and equatorial regions.
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