Biology High School

There were 20 brown bears in an area of a small Canadian forest during the summer months. Scientists expected a change in population size coming soon. What factors would cause an increase in the brown bear population size?a. An increase in soil nutrients and decrease in summer temperaturesb. An increase in competition and decrease in birthsc. An increase in births and emigrationd.An increase in food sources and immigration

Answers

Answer 1

Answer:

The answer is an increase in food sources and immigration

Related Questions

What was Newton's second law? BRAINLIEST FOR THE BEST ANSWER DUE IN FIVE MINUTES PLEEAASSEE ANSWER

Answers

Answer:It's basically F = ma, Net Force = mass*acceleration.

Explanation:

Isaac Newton's second law : Acceleration is produced when a force acts on a mass. The greater the mass (of the object being accelerated) the greater the amount of force needed (to accelerate the object).

Explain depth perception.

Answers

Answer:

the ability to perceive the relative distance of objects in one's visual field.

Explanation:

What are two reasons WE NEED cells to divide?

Answers

Answer:

555 415 4349 join my zoom

Explanation:

The firs reason would be for growth. The second reason is that they help replace damaged or dead cells.

PLEASE HELP 1 QUESTION

Answers

Answer:

D.) All are important factors of natural selection

Explanation:

i have a strong feeling the answer to that is all of the above, since all of thise yshally have something to do with natural selection.

List the four types stem cells, give an example of each type, and explain how much each type can differentiate.

Answers

(Sorry for the long answer lol but hopefully this helps)

Embryonic stem cells

Embryonic stem cells are obtained from the inner cell mass of the blastocyst, a mainly hollow ball of cells that, in the human, forms three to five days after an egg cell is fertilized by a sperm. A human blastocyst is about the size of the dot above this “i.”

In normal development, the cells inside the inner cell mass will give rise to the more specialized cells that give rise to the entire body—all of our tissues and organs. However, when scientists extract the inner cell mass and grow these cells in special laboratory conditions, they retain the properties of embryonic stem cells.

Embryonic stem cells are pluripotent, meaning they can give rise to every cell type in the fully formed body, but not the placenta and umbilical cord. These cells are incredibly valuable because they provide a renewable resource for studying normal development and disease, and for testing drugs and other therapies. Human embryonic stem cells have been derived primarily from blastocysts created by in vitro fertilization (IVF) for assisted reproduction that were no longer needed.
Tissue-specific stem cells

Tissue-specific stem cells (also referred to as somatic or adult stem cells) are more specialized than embryonic stem cells. Typically, these stem cells can generate different cell types for the specific tissue or organ in which they live.

For example, blood-forming (or hematopoietic) stem cells in the bone marrow can give rise to red blood cells, white blood cells and platelets. However, blood-forming stem cells don’t generate liver or lung or brain cells, and stem cells in other tissues and organs don’t generate red or white blood cells or platelets.

Some tissues and organs within your body contain small caches of tissue-specific stem cells whose job it is to replace cells from that tissue that are lost in normal day-to-day living or in injury, such as those in your skin, blood, and the lining of your gut.

Tissue-specific stem cells can be difficult to find in the human body, and they don’t seem to self-renew in culture as easily as embryonic stem cells do. However, study of these cells has increased our general knowledge about normal development, what changes in aging, and what happens with injury and disease.
MESENCHYMAL STEM CELLS:
You may hear the term “mesenchymal stem cell” or MSC to refer to cells isolated from stroma, the connective tissue that surrounds other tissues and organs. Cells by this name are more accurately called “stromal cells” by many scientists. The first MSCs were discovered in the bone marrow and were shown to be capable of making bone, cartilage and fat cells. Since then, they have been grown from other tissues, such as fat and cord blood. Various MSCs are thought to have stem cell, and even immunomodulatory, properties and are being tested as treatments for a great many disorders, but there is little evidence to date that they are beneficial. Scientists do not fully understand whether these cells are actually stem cells or what types of cells they are capable of generating. They do agree that not all MSCs are the same, and that their characteristics depend on where in the body they come from and how they are isolated and grown.
Induced pluripotent stem cells

Induced pluripotent stem (iPS) cells are cells that have been engineered in the lab by converting tissue-specific cells, such as skin cells, into cells that behave like embryonic stem cells. IPS cells are critical tools to help scientists learn more about normal development and disease onset and progression, and they are also useful for developing and testing new drugs and therapies.

While iPS cells share many of the same characteristics of embryonic stem cells, including the ability to give rise to all the cell types in the body, they aren’t exactly the same. Scientists are exploring what these differences are and what they mean. For one thing, the first iPS cells were produced by using viruses to insert extra copies of genes into tissue-specific cells. Researchers are experimenting with many alternative ways to create iPS cells so that they can ultimately be used as a source of cells or tissues for medical treatments.

Four types stem cells are :

Embryonic stem cells.Tissue-specific stem cells.Mesenchymal stem cells.Induced pluripotent stem cells.

What are 4 uses of stem cells?

People who might benefit from stem cell therapies include those with spinal cord injuries, type 1 diabetes, Parkinson's disease, amyotrophic lateral sclerosis, Alzheimer's disease, heart disease, stroke, burns, cancer and osteoarthritis.

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please help me list the four forms in which living cells exists and give an example each

Answers

Single/free-living :Amoeba

Colony/colonial :Eudorina

Filamentous/filament :Spirogyra

Part of living organism - cheek cell/onion cell

Severe or sudden changes in Earth's atmosphere can cause entire species of animals to die. When all of the members of species die out, it is called
A
mutation.

B
natural selection.

C
extinction.

D
revision.

Answers

Answer:

Extinction

Explanation:

Extinction stands for coming to an end or dying out

When all of the members of a specie die out due to Severe changes in Earth's atmosphere it is called : (C). Extinction

Meaning of extinction

Extinction is the loss of a specie or an entire race due to severe changes in the atmosphere or climate changes. Its cause is mostly natural and most time human influenced.

Extinction can also be said to mean the coming to an end of a racee or dying out of a race or species.

In conclusion, When all of the members of a specie die out due to Severe changes in Earth's atmosphere it is called Extinction

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Help please ;)))

I’ll give brainless

Answers

i think it is recessive but i could be wrong

Answer:

Incomplete Dominance

Explanation:

It's not completely dominant over the other, so therefore it is incomplete dominance. Hope this helped :)

In a longitudinal wave, _______ are the places where the coils of the wave are crowded together (squishy) , and ________are the places where the coils are spread apart. lesson: 4.02
Question 11 options:

rarefaction, compression

compression, rarefaction

trough, crest

crest, trough

Answers

Answer:

the answer is C)trough, crest

I need help PLZZ this will mean a lot

Answers

Answer:

True

Explanation:

some genetics can cause mutations and can be passed down or skip generations

which set of organelles would be found in both human lemon tree cells

Answers

Mitochondria, nucleus, and endoplasmic reticulum, and cen

as cell size increases the surface area to volume ratio

Answers

Answer:

The important point is that the surface area to the volume ratio gets smaller as the cell gets larger. Thus, if the cell grows beyond a certain limit, not enough material will be able to cross the membrane fast enough to accommodate the increased cellular volume.

Elaborate on the disease Syphilis. Please and thank you

Answers

syphilis is a bacterial infection usually spread by sexual contact. The disease starts as a painless sore typically on your genitals, rectum or mouth. Syphilis spreads from person to person via skin or mucous membrane contact with these sores.

BRAINLEST AND POINTS HELP ME OUT !!

Answers

Answer:

2 is a, 1 is b, 4 is d, and 3 is c

Explanation:

Areas by the coast (like the one pictured) will often change due to the wind 1 point
patterns. It forms small hills that can be stabilize by some plants, but will
continuously shift over time. This is an example of:
Dunes
Morianes
Sandspit
Eskers

Answers

Answer:

is this a question

Explanation:

Answer:

Sandspit is the best answer

When humans eat food, the food begins digestion in the mouth. Then it travels to the stomach and finally ends up in the intestines, where nutrients are able to diffuse into the bloodstream. The circulatory system then delivers the nutrients to all the different parts of the body.

Answers

Answer:

The digestive system

Explanation:

Answer:

Stem

Explanation:

READING TOOL Make Connections Fill in the concept map to show the
organization of a chloroplast. Then below, answer the questions to describe how the
different parts are related to each other.
Chloroplast

Answers

Answer:

Chloroplast -----membranes----------internal

---------external

----- Tylacoids-------------Grana

----- Stroma

You will find the complete concept map in the attached files

Explanation:

The chloroplasts are limited by two membranes, the internal and the external membranes. Both of them are separated by the intermembrane space.

In the interior of the organelle, thylakoids are composing the third system of membranes. In the interior of thylakoids, there is an additional compartment named thylakoid space. This membrane system forms piles, known as grana. Different grana structures connect to each other by a longer thylakoid membrane. The photosynthetic pigments are located in the thylakoids, where it occurs the light-dependent reactions.

Surrounding the thylakoids there is a dense liquid called the stroma. Here takes a place the Calvin cycle.

To fill in the diagram you will need to show the composition of the chloroplast. Therefore, you should show the internal and external membranes, the thylakoids, the grana, and the stroma.

We can arrive at this answer as follows:

Chloroplasts are organelles present in plant cells, they are very important in the photosynthetic process.Chloroplasts have two membranes, an internal and an external one, which limits the entry and exit of substances.Inside the chloroplasts are the thylakoids, which are formed by structures called grana, which form numerous piles, which resemble towers.The unoccupied space within the chloroplast is filled with a fluid called the stroma.

In the figure below you can see how this diagram can be filled.

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During meiosis, cells divide two times, rather than one time like mitosis. Why is having two rounds of division important for sexual reproduction?

Answers

It leads to crossing over which increases genetic variation

Is carbon a renewable resource?

Answers

Answer: No

Explanation:

During the months of July, August, and September, when the squirrels are more active we would expect the artic squirrels:

A) To produce more O2 when compared to other months.

B) To have a higher output of CO2.

C) To produce less water.

D) Increase in the output of glucose.

Answers

Answer:

B) To have a higher output of CO2.

Explanation:

We would expect the artic squirrels to produce a higher output of CO₂. As with most heterotrophs, the by-product of their respiratory activities is the formation of carbon dioxide gas.

They use oxygen gas to break down glucose. The process releases energy for their life activities. The waste product is usually carbon dioxide which enters back into the ecosystem as a waste.

If an atom contains 7 protons, 15 neutrons, and 7 electrons, its atomic number would be:

Answers

Answer: Nitrogen has an atomic number of 7 (Z=7) because it has 7 protons in its nucleus. Some nitrogen atoms have an atomic mass number of 15 (A=15).

Explanation:

What is the total profit of cell respiration?

Answers

Summary. Cellular respiration is the aerobic process by which living cells break down glucose molecules, release energy, and form molecules of ATP. Overall, this three-stage process involves glucose and oxygen reacting to form carbon dioxide and water

As Mia mixed two substances in a test tube, she noticed that the test tube became warm. She also noticed gas coming from the test tube. Based on Mia's observations, what was most likely occurring inside the test tube?

Answers

Answer:

A new substance was forming

Explanation:

I did the quiz ahah

Chemical reactions can take many forms, including synthesis, breakdown, single replacement, double replacement, combustion, and acid-base reactions. Thus, option A is correct.

What different chemical reaction possible in test tube?

Typically, test tubes are composed of glass or plastic. They can be used to heat fluids, conduct chemical reactions, and even propagate living things.

An effective visual clue (a color change, precipitate, or gas production) as proof of a chemical reaction is often provided by a quick reaction carried out in a test tube.

One or more of the following events can indicate that a chemical reaction has occurred: The reaction flask's interior has undergone a color shift. Gas has developed. Typically, the presence of bubbles indicates that a gas has formed.

Therefore, A new substance was forming

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The "code" for physical traits is contained in a molecule called
Segments of this molecule that code for specific
are called.....
In order to conserve space and protect the molecule, DNA wraps around proteins to form....
What a cell is about to divide, DNA wraps up even tighter into
Complex organisms have many molecules of DNA in every cell, and each molecule is commonly referred to as a......
, even if it is not wrapped up as one.

Answers

Answer:

DNA

proteins

genes

chromatin

chromosomes

chromosome

Explanation:

The “code” for physical traits is found in a molecule called DNA. Segments of this molecule that code for specific proteins are called genes. In order to conserve space and protect the molecule, DNA wraps around proteins to form chromatin. When a cell is about to divide, DNA wraps up even tighter into chromosomes. Complex organisms have many molecules of DNA in every cell, and each molecule is commonly referred to as a chromosome, even if it is not wrapped up as one.

The "code" for physical traits is contained in a molecule is called DNA (genetic code).

Segments of this molecule that code for specific are called genes.

In order to conserve space and protect the molecule, DNA wraps around proteins to form nucleosomes.

What a cell is about to divide, DNA wraps up even tighter into chromosomes.

Complex organisms have many molecules of DNA in every cell, and each molecule is commonly referred to as a chromosome, even if it is not wrapped up as one.

In conclusion, the "code" for physical traits is contained in a molecule is called DNA (genetic code).

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Select the correct answer.
How is relative-age dating used to determine the ages of fossils?
A.
by observing the formation of sedimentary rocks
B.
by using radioactive isotopes
C.
by estimating the number of fossils in a particular region
D.
by the formation of igneous rocks
E.
by identifying the way the fossils were formed

Answers

Answer:

i think it c

Explanation:

True or False: Winter occurs because Earth is farther away from the sun,
and Summer occurs because Earth is closer to the sun. *
True
Or
False

Answers

Answer:

False

Explanation:

The seasons occur because of the tilt of the Earth on its axis. The earth stays in a perfect orbit around the sun and doesn't move further or closer to it.

f a l s e

explanation: i did my research

True or False: The cells that make up your body have the same DNA.

Answers

Answer:

True

Explanation:

Pls Give Brainlest Thanks

Answer:All of the cells within a complex multicellular organism such as a human being contain the same DNA;

Explanation: however, the body of such an organism is clearly composed of many different types of cells. ... The answer lies in the way each cell deploys its genome.

___ - breaks down to form the soil above it

Answers

Answer:

Under the action of heat, cold, rain, wind, and other atmospheric factors, the rock breaks down physically into small fragments that become the parent material of the soil. The rock also chemically changes as the compounds in the rock dissolve in rain or react with air.

Explanation:

Please help me and please use your own word and do not copy and paste form google thank you
What is a macromolecule

Answers

Answer:

A macromolecule is a very large molecule, such as protein, commonly composed of the polymerization of smaller subunits called monomers. They are typically composed of thousands of atoms or more. A substance that is composed of monomers is called a polymer .

Explanation:

After photosynthesis, energy that the coral can use is stored in
molecules of?

Answers:
O2
CO2
H2O
C6H12O6

Answers

Answer:

Energy is stored in glucose molecules C6H12O6

Explanation:

Producers make sugars stored as monomers bonded together to form polysaccharides, long chain hydrocarbon molecules as a result of the process of photosynthesis. These molecules, like the monosaccharide glucose, store converted solar energy as stable chemical energy in covalent bonds. In covalent bonding, the elements share electrons with each other.

These high-energy bonds are stable and not easily destabilized or broken. The energy is retrieved the the process of respiration in the mitochondria.

Glucose is broken down, while energy is transferred to bonds between ADP and inorganic phosphate, to produce ATP (adenosine triphosphate).

Eg. for aerobic respiration...

C6H12O6 (glucose) + 6 O2 → 6 CO2 + 6 H2O + ≅38 ATP

glucose+ oxygen → carbon dioxide+ water+ energy

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