Answer:
to study earth's past climate
Answer:
Explanation:
Air bubbles and dust get trapped in ice as it forms. And the ice in some places, like Antarctica, has stayed frozen for over a million years. Scientists drill holes in the ice and remove ice cores. Each year's worth of ice forms a layer within the core.
The material trapped in ice layers gives information about the climate at that time. Scientists study the layers to learn about past temperatures and precipitation. They can learn how the amount of carbon dioxide in the atmosphere has changed over time. The layers also reveal when events such as volcanic eruptions have taken place.
Vernon is studying the population of deer in a tract of forest. He gathers the following data.
Birth rate: ~50 deer/year
Death rate: ~70 deer/year
Which additional observation would support the conclusion that the deer population is NOT changing size from year to year, meaning that the net population change is 0?
Answer: About 20 deer per year immigrate to the tract of forest.
Explanation:If 50 deers are born every year and 70 deers die every year but the population doesn't change it means deers immigrate to the tract of forest.
The deer population is not changing size from year to year, meaning that the net population change is 0 that is about 20 deer per year immigrate to the tract of forest.
What are the different types of population ?Population refers to a discrete groups of individuals with their basic characteristics, It consists of a same group of species present in a particular geographical location and interbreed with each other.
In a population all individuals are not able to survive and reproduce due to presence of genetic variations, some population are Finite or countable.
Infinite Population is uncountable population in which the counting due to the impossible population and Existent Population of the individuals, whose unit is available in solid form.
Hypothetical Population is another type of population and its unit is not available and Most of the populations are unstable due to the presence of various physical factors.
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WILL AWARD 90 POINTS!!
The light that is absorbed by a green leaf is
A) from the green portion of the electromagnetic spectrum
B) from the red and violet portion of the electromagnetic spectrum.
C) a mixture of green and yellow pigments
D) not used in photosynthsis
Answer:
B) from the red and violet portion of the electromagnetic spectrum
Explanation:
it is a Chlorophylls
Which of the following is NOT a feature of both prokaryote and eukaryote
cells? *
cytoplasm
O plasma membrane
nuclear membrane
ribosome
The feature that is not a feature of prokaryotes and eukaryotic cell both is nuclear membrane. The correct option is C.
What is a eukaryotic cell?Eukaryotes are organisms with cells that contain a nucleus and other organelles that are surrounded by a plasma membrane.
Organelles are internal structures that perform a number of functions, including energy production and protein synthesis. The essential structures of a eukaryote cell.
Organelles in eukaryotes perform specific functions such as energy production, photosynthesis, and membrane construction.
A prokaryotic cell is one that lacks a true nucleus and membrane-bound organelles.
Bacteria and Archaea organisms use prokaryotic cells, whereas all other forms of life use eukaryotic cells.
The main difference between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus, whereas prokaryotic cells do not.
Thus, the correct option is C.
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please help me answer this question if correct I'll make brainylist!!!!
Property of water
Definition
Example
Adhesion
1
Cohesion
Surface Tension
capillary Action
Also need examples
i lost my virginity to a web browser.
Answer:
the property of water is 0 degrees freezing point 100 degrees boiling point 1g cm-3 and example of capilary action is like water that move on plant and surface tansion is like animal that could stay at the surface of water because there is a force between molecule
Some microwaves come equipped with special features that allow you to choose a pre-set time. These buttons are called what? A) intelligent buttons B smart buttons C С mute buttons D awesome buttons
Answer:
B smart buttons
Explanation:
Have a good day!
if you feel like it, can you give me brainlyist?
Answer:
B
Explanation:
no give me brainlyist
hello, I need help thank you.
Answer:
A
Explanation:
:)
Answer:
a
Explanation:
hope this helps :)
which of the following structures do all eukaryotic cells contain?
Answer:
A) A nucleus
Explanation:
Nucleus is the structure that all eukaryotic cells contain as represented by the diagram. Nucleus is present inside the cell and located in the center of the cell.
What is nucleus?Nucleus is defined as a membrane that is enclosed cell organelle inside a cell and it contain chromosome.The main function of nucleus is to regulate and controls the activities of the cell. It is also known as brain of the cell as it regulates and controls all the function of the cell.
The structure of nucleus is that it contains a structures such as nuclear envelope, nucleoplasm, or it is also known as nucleus sap or nuclear matrix, nucleolus and chromatin.
Nucleus stores the DNA of the cell and maintain its integrity, and provide it for the process of transcription, traslation and replication.
The nucleus contain nucleolus and the region is black and chromosomes have beeds like structure on them and they are known as genes that helps to pass a particular character from one generation to other generation.
Therefore, Nucleus is the structure that all eukaryotic cells contain as represented by the diagram. Nucleus is present inside the cell and located in the center of the cell.
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Which of the following best describes the composition of a
nucleotide?
a
Ob
a five-carbon sugar attached to a phosphate group
and a nitrogenous base
a carbon atom joined to hydrogen and three
functional groups
a chain of carbon atoms with a carboxyl group
bonded to one end
a pair of six-carbon rings attached to each other
Ос
Od
Answer: a nitrogen-containing base, a phosphate, and a pentose sugar
Explanation:
A five-carbon sugar attached to a phosphate group and a nitrogenous base is the best description of the composition of a nucleotide molecule. Thus, the correct option is A.
What is a Nucleotide?Nucleotides are the organic molecules which consist of a nucleoside molecule and a phosphate moiety. Nucleotide molecules serve as monomeric units of the nucleic acid polymers such as deoxyribonucleic acid (DNA) and ribonucleic acid (RNA), both of which are the essential biomolecules within all the life-forms which are found on the Earth.
A nucleotide molecule consists of a nitrogen-containing base such as adenine, guanine, thymine, or cytosine in DNA and adenine, guanine, uracil, or cytosine in case of RNA molecule, a phosphate group, and a pentose sugar such as deoxyribose in DNA and ribose in RNA.
Therefore, the correct option is A.
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A car is accelerated at a rate of 3.0 m/s^2. If its original speed is 8.0 m/s, how many seconds will it take the car to reach a final speed of 25.0 m/s?
Answer:
t = 5.67 seconds
Explanation:
v=Vo + at
25 = 8 + 3t
17 = 3t
t = 5.67 seconds
Can a purine pair with a purine?
Answer:
A always pairs with T and C always pairs with G. A and G are purines, meaning that they have two rings, while T and C are pyrimidines, meaning they have one ring. Due to the Watson and Crick model, the width of DNA is constant, meaning that there must be a consistant width in each base pairing. As a result, only a purine can pair with a pyrimidine, giving each base pairing a total of 3 rings.
Explanation:
True or False (Circle the correct answer choice) Scientists propose explanations that are testable
Answer:
True
Explanation:
Which of the following statements describes a factor in the island biogeographical model? (3 points) Dispersing species are more likely to find smaller secluded habitats Smaller populations are less likely to go extinct Larger habitats have more habitat heterogeneity for species Large islands have less available niches for immigrating specie
Answer:
Larger habitats have more habitat heterogeneity for species
what determines how much energy a human can receive from food answer correct and ill give brainliest
Answer:
Food molecules.
Explanation:
Ape-x
What is parasitic mode of nutrition? Explain with examples.
Answer:
Explanation:
ANSWER 1) Parasitic nutrition is a mode of heterotrophic nutrition where a parasitic organism lives on the body surface or inside the body of another type of organism (a host)
Examples of parasitic mode of nutrition are mosquito, ticks, lice, bedbugs , tapeworm
because lives on the body surface or inside the body of other organism called host.
ANSWER 2 ) Organisms that live in or on other organisms and acquire food at the expense of its host are called parasites. Most parasites are harmful to the hosts’ health; sometimes, they even kill the host. Both animals and plants may serve as a host. Unlike commensalism, the parasite causes some harm to its host. A few examples of parasites are louse on a human head, Cuscuta plant and tapeworms.
Cymothoa exigua is an unusual parasite. It is also known as the tongue-eating louse and is aptly named so as it is found in the mouth of the marine fish Lithognathus. It essentially severs the fish’s tongue, cutting off the blood supply and causing the tongue to fall off. The louse then attaches itself to the remains of the tongue and essentially acts as the fish’s new tongue.
u can choose which one to write :)
Explanation:
Parasitic nutrition is a mode of heterotrophic nutrition where an organism lives on the body surface or inside the body of another type of organism .
The pupils or the dark centers of your eyes, get larger when you move into a dark area. What characteristics of living things does
this change demonstrate?
A)
Cellular Organization
B)
Response to Stimuli
Reproduction
D)
Growth and Development
Answer:
Response to stimulus
Explanation:
I think
The average temperature of the surface of Earth has increased approximately 1°C in
the past century. Which reason best explains this increase in temperature?
Th average temperature of the earth has been increased as a result of
higher level of carbon dioxide and other greenhouse gases in the
atmosphere.
The carbon dioxide and other greenhouse gases has increased over the
past century as a result of the emission of these gases by automobiles,
industries etc.
These gases deplete the ozone layer which is responsible for the
absorption of sun rays .When this happens, the sun rays reaching the earth
will be increased thereby causing an increase in temperature.
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Which one is correct?
Answer:
I would think that C is the answer
Explanation:
Complex carbohydrates are made up of _
Sugar molecules strung together
Hiiii pls answe this
Answer:
D
Explanation:
Answer:
D
Explanation:
D is the correct answer, because the Cell Theory does not state what D says.
How is Mitosis and Meiosis similar?
Answer:
they produce new cells
Explanation:
follow same steps
begin with parents cell
i hope it helped
Media consumption is the:
A. Number of meals a person eats while using media.
B. Amount of money someone spends on networking devices.
C. Amounts of media a person uses on a regular basis.
D.number of media devices that are for sale online.
Answer:
C.
Explanation:
Media consumption is defined as the sum of information and entertainment media taken in by an individual or group.
When it’s freezing outside how does this insulation prevent the pipes from bursting
Answer:
When Its freezing outside you are SUPPOSED to keep water running so your pipes don't freeze.
Explanation:
Answer:
Keep Water Running
Explanation:
How do cells maintain homeostasis in different environmental conditions?
[tex]\huge\pink{Answer}[/tex]
Homeostasis at the cellular level is critical to maintaining homeostasis in the whole organism. Animal cells have several ways to help them stay in equilibrium.
Cell Membrane and Phospholipid BilayerThe cell membrane functions as a boundary separating the internal cellular environment from the external environment. It is selectively permeable which means it lets some materials pass through but regulates the passage of other materials.
Ion Transport MechanismsThere are several ion transport mechanisms within the cell membrane that function to maintain proper levels of solutes inside and outside the cell. One of the most important is the sodium-potassium ATPase pump.Another critical pump is the calcium ATPase pump which moves calcium out of the cell or pumps it into the endoplasmic reticulum. This transfer of ions back and forth across the membrane creates a membrane potential that drives the ionic currents.
Cellular CommunicationThere are three basic kinds of intercellular communication used to maintain homeostasis. The first is when direct contact occurs between the membranes of two cells and they signal to each other. The second is when cells use short range chemical signals over short distances. The third is long ranged signals that are secreted into the bloodstream and can be carried anywhere in the body.
HOPE IT HELPS ☺️9. The gap 1, gap 2, and synthesis stages of the cell cycle make up...
a. interphase
b. telophase
c. cytokinesis
d. mitosis
Answer:
a. interphase
Explanation:
The gap 1, gap 2, and synthesis stages of the cell cycle make up the interphase. Thus, the correct option is A.
What is the cell cycle?The Cell cycle may be defined as the entire sequence of events happening from the end of one nuclear division to the beginning of the next. The cell cycle can be divided into two phases. They are:
The Interphase.The M-phase (division phase).Interphase comprises the G1 phase, S-phase, and G2 phase. The G1 phase is the resting phase. DNA synthesis does not take place. It is involved in the synthesis of RNA and protein. S-phase deals with the synthesis of DNA and histone proteins.
While the G2 phase is the continuous synthesis of RNA and proteins. After this phase, a cell enters the M phase.
Therefore, the gap 1, gap 2, and synthesis stages of the cell cycle make up the interphase. Thus, the correct option is A.
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Why is it not easy to replace a link in a food chain?
There are not enough animals to replace the previous organism.
The decomposers will not decompose another type of organisms.
There are not enough plants to replace the previous organisms.
There may be limited type of natural predators organisms may have.
Answer: D
Explanation: Everything in the food chain is there for a reason. Removing one thing could ruin the whole ecosystem
What phase is the moon in at position 1?
Answer:
New moon.
Explanation: If the moon blocks sunlight it will be declared a new moon because all the sunlight makes it look bright as day when it's in the middle of the night.
Is the animal cell unicellular or multicellular.
Answer:
Most of them are unseen, visible only under a microscope. These tiny organisms are unicellular, composed of only a single cell. The familiar plants, animals and fungi that we can see represent only a tiny fraction of life on Earth. These organisms, being made of more than one cell, are called multicellular.
Explanation:
What is the physical environment where an organism lives?
Answer:
Its A Habitat//Ecosystem
An ecosystem is just all the organisms that live in a place, together with their physical environment. Habitat is the natural environment of an organism.
The formula for density is mass + volume O mass - volume O mass x volume O mass : volume
Answer:
mass : volume
Explanation:
Density is a physical quantity. An intensive property which can be used to determine any substance in nature.
Density is a unique quantity because it highlights the mass per unit volume of a substance.
Mathematically;
Density = [tex]\frac{mass}{volume}[/tex]
Mass is the amount of matter contained in any substance
Volume is the space they occupy
We clearly see that the ratio of mass to volume gives the value of density.
