What needs to happen in order for two populations to be isolated?

Answers

Answer 1

Answer:

Isolation means that organisms of the same species are separated, and happens when there is something between the organisms that they can't cross.

Explanation:

Organisms become isolated as a result of environmental change. The cause of isolation can be gradual, like when mountains or deserts form, or continents split apart.


Related Questions


The region of the stem nearest the seed.

Answers

Answer:

B. Hypocotyl

Explanation:

In which kingdom would you place an organism that reproduces by spores, is made of many cells enclosed by cell walls, have a nucleus, and are heterotrophs?

plant

fungi

bacteria

animal

Answers

Answer:

Fungi

Explanation: Fungi reproduce by spores, they are enclosed by cell walls, they have a nucleus as they are eukaryotic, and they are heterotrophs as they do not contain chloroplasts

Why is it important for nitrogen to be more abundant in our atmosphere than oxygen?

A. Oxygen is only breathable if diluted with nitrogen.

B. Nitrogen and oxygen combine to produce weather that is essential for life.

C. Oxygen must be diluted because it is a highly combustible gas.

D. Nitrogen is a heavy molecule that pulls oxygen, a light molecule, to the surface for oxygen-dependent life to use.

Answers

Answer:

Oxygen must be diluted because it is a highly combustible gas

Explanation:

Oxygen will burn without nitrogen in our atmosphere

Susan suffered from a heart attack. When the doctors tested the heart muscle they found that she
had an increased ratio of lactic acid to pyruvic acid in her heart tissue. What does this say about
the availability of oxygen in her heart muscle cells?

Answers

Answer:

The heart cells had no received adequate oxygen supply.

Describe two types of tumors, and indicate which type is harmful and which is not.

Answers

A benign tumor is not a malignant tumor, which is cancer. It does not invade nearby tissue or spread to other parts of the body the way cancer can. In most cases, the outlook with benign tumors is very good. But benign tumors can be serious if they press on vital structures such as blood vessels or nerves. A malignant primary tumor is more dangerous because it can grow quickly. It may grow into or spread to other parts of the brain or to the spinal cord. Malignant tumors are also sometimes called brain cancer.

Yeah Why is global warming a
significant environmental
stressor

Answers

Answer:

it can destroy animal habitat like the penguin of polar bear. plus it causes droughts and severe storms to happen. also I've heard that in the warmest places you can catch diseases more easily.

can someone help me right now

Answers

I choose a Temperate Forest in Eastern USA (Tennessee/North Carolina)

4 Biotic factors in a Forest
Plants such as trees and shrubs
Animals such as moose
Insects such as ants and mosquitoes
Fungi such as mushrooms

4 Abiotic factors in a Forest
Sun proving sunlight to all the plants
Rocks creating a rough terrain
Water flowing in rivers to provide plants and animals with essential electrolytes and minerals
Rich Soil providing essential nutrients for plant growth, which in turn provide a food source for herbivorous animals such as moose.

One interaction I see between biotic and abiotic factors is that the water flowing in rivers and streams inside my Temperate Forest is providing essential electrolytes and minerals such as Magnesium and Calcium to animals such as moose and deer drinking the water, or plants nearby the stream, who utilize the water in their process of cellular respiration to create glucose which feeds the rest of the plant and in turn will feed an herbivorous animals looking for fresh plants to eat.

Need help with this will make brainliest if right
Research on the different thermal conductivities of different materials. From the different values of the thermal conductivities give seven example of conductors and seven example of insulators

Answers

Answer:

conductors are like silver, gold, copper, steel, sea water, and iron. insulators are rubber, glass, oil, diamond, dry wood, and insulation.

Explanation:

What is the complementary strand of DNA for the following strand of DNA: ATTCTAGGCTCG

Answers

Answer:

TAAGATCCGAGC

Explanation:

I believe this is the answer, A and T are complimentary and C and G are complimentary.

What does GAC code for?

Answers

Answer:

DNA codons

Explanation:

Answer:

Aspartic acid

Explanation:

Complimentary base = CTG ( or CUG )

Question 2 of 10
Which of the following is a product of fossil fuel combustion that contributes
to the greenhouse effect?
A. N2
B. O,
C. CO2
D. H2O2
SUBMIT

Answers

C carbon dioxide (co2)

[GT.02]Which of these qualities helps scientists to choose appropriate methods to date fossils?
O punctuality
O honesty
O creativity
O modesty

Answers

I am either gonna say punctuality or honesty this is tricky

Answer:

I think it is creativity, c

Explanation:

what will be the consequences if w do not educate them?

Answers

Answer:

they cannot know their doing and there is a posiblity that they fail

. The graph below represents the relationship between the amount of spring rainfall recorded at a pond and the number of frogs in that pond. The data were collected over five spring seasons. What is the number of frogs in the pond when the rainfall was 15 cm? *​

Answers

Answer:

Use the drawing tools to form the correct answer on the graph.

Graph the line that represents this equation:

Explanation:

Inclusion bodies may contain which of the following?

Polyhydroxybutyrate
Ribosomes
DNA
RNA

Answers

Inclusion bodies contain very little host protein, ribosomal components or DNA/RNA fragments.

Inclusion bodies may contain Ribosome, DNA, and RNA. The correct option is B, C, and D.

What is an inclusion?

It is a type of body that is present in neurons, tissue cells, and like red blood cells, bacteria, viruses, etc. It is a type of protein.

These bodies contain or store fats and sugars in animals and in plants it store glycogen.

Thus, the correct options are B, C, and D.

Learn more about inclusion

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All of these ___ help to block, trap or flush pathogens out of the body.

What are the following 6-
A-e???

Answers

Answer:

natural barriers

Explanation:

skin, mucous membrane, tears, earwax, muscus, stomach acid

Viruses cause which of the following human diseases?
O the flu, AIDS and Bubonic Plague
O the flu, AIDS and athlete's foot
AIDS, cold sores and athlete's foot
the flu, AIDS, and cold sores

Answers

Answer:

the flu, AIDS and Bubonic Plague

The flu, aids, and the bubonic plague is your answer

3. How do nutrients and other materials move in fungi?

Answers

Answer:

Nutrients and other materials from the environment are absorbed through mycelia. The branching mycelia have a high surface-area-to-volume ratio which allows the  absorption of nutrients to be more efficient. Fungi may even digest nutrients by releasing enzymes into the environment.

Explanation:

I have a strange feeling that this isn't the answer you were looking for.

A man with AB blood is married to a woman with AB blood. What blood types will their children have

Answers

Answer:

A AB and B all three are possible

Which choice refers to a single population ?

a. The zebras
b. The plants
c. The animals
d. The water

Answers

Answer:

guy above me is correct

Explanation:

STATE 3 function's of gibberling in biology​

Answers

Answer:

Gibberellins (GAs) are plant hormones that regulate various developmental processes, including stem elongation, germination, dormancy, flowering, flower development, and leaf and fruit senescence. GAs are one of the longest-known classes of plant hormone.

Explanation:

Question:
Soil is sometimes called a bridge between life and the non-living world. Explain what that means.
es )

Answers

Explanation:

The non living things in its environment is called a " matrix,"

A matrix is what supports a non living thing to reproduce, triple its existence & reproduce in mass quantities, like soil bacteria, and others..

Which elements are likely to have similar properties to calcium because they have the same number of valence electrons as calcium

Answers

Answer:

The correct answer would be - strontium, magnesium, beryllium.

Explanation:

As we know that the number of the same valence electrons is most likely to exhibit similar physical and chemical properties so the elements of the particular group in the periodic table have a similar number of physical and chemical properties and a similar number of the valence electrons.

For example, group 2 elements are known as alkaline earth metals, and strontium, magnesium, beryllium, and calcium are the same group elements thus, they have the same chemical and physical properties as they have 2 valence electrons.

Very rapid (i.e. in 1-2 seconds) responses to maintain normal blood pressure during a sudden decrease in blood volume by hemorrhage can be initiated by Group of answer choices secretion of ADH from the posterior pituitary. vasoconstriction of capillaries. baroreceptors in the aortic arch. vasodilation of precapillary sphincters. Two of the answers are correct.

Answers

Answer:

vasoconstriction of capillaries.

baroreceptors in the aortic arch.

Explanation:

Vasoconstriction of capillaries and baroreceptors in the aortic arch are the two quick responses of body to maintain normal blood pressure during hemorrhage. Vasoconstriction is very necessary for lowering acute blood loss during hemorrhage means escape of blood from a ruptured blood vessel as well as maintain body heat and arterial pressure. The function of baroreceptors is to respond to the change in the tension of the arterial wall when blood pressure changes.

Please help, (Genetics question)

Answers

The answer is 3

Explanation I just makes sense I don’t know how to explain it but the answer is number 3

After studying prokaryotic and eukaryotic cells, what do scientists believe?

Answers

Answer:

Scientists believe that mitochondria evolved from aerobic, or oxygen-consuming, prokaryotes. ... Eukaryotic cells also contain a variety of structures and organelles not present in prokaryotic cells.

In people-eaters, purple is dominant to white. A true-breeding white mutant is mated with a different true-breeding white mutant. All of the F1 are purple. When the purple F1 offspring mate with each other, their offspring occur in the ratio of 9 purple : 7 white. Which phenomenon explains the purple F1 offspring

Answers

Answer:

The correct answer is - Complementation.

Explanation:

In this pattern of inheritance, there are two same type mutants that are crossed that are true-breeding white with another true-breeding white mutant. Let these mutants are CCpp and the other be ccPP.

All the f1 offspring produced are found to be purple in color as offspring will be CcPp. The products of both gene C and P required for the purple pigment to be expressed these genes complement each other and the absence of any of gene results in lack of the dominant phenotype.

g Classify the statements as describing deoxyribonucleic acid (DNA) or ribonucleic acid (RNA). DNA RNA is a single molecule that can be over 10,000,000 nucleotides long is usually double stranded includes the base thymine can be translated into a protein is the genome for prokaryotic organisms is usually single stranded includes ribose sugar is a single molecule that can form a complex secondary structure

Answers

Answer:

DNA:

- is a single molecule that can be over 10,000,000 nucleotides long

- is usually double stranded  

- includes the base thymine

- is the genome for prokaryotic organisms

RNA:

- can be translated into a protein  

- is usually single stranded  

- includes ribose sugar  

- is a single molecule that can form a complex secondary structure

Explanation:

Deoxyribonucleic acid (DNA) is the hereditary genetic material of both prokaryotic and eukaryotic organisms, while RNA is the genetic material of many viruses. DNA is a double helix molecule composed of four types of nucleotides: a nitrogenous base (Adenine, Thymine, Cytosine and Guanine), a five-carbon sugar (i.e., deoxyribose), and a phosphate group. On the other hand, RNA is usually a single-stranded molecule whose nucleotides contain ribose sugars and Uracil bases replace Thymine bases. During translation, a type of RNA molecule referred to as messenger RNA (mRNA) is used as template to direct the synthesis of a polypeptide chain (protein). This RNA molecule can fold to form stable double-stranded RNA hairpins (i.e., secondary structures).

How does halving the hawk population affect the grass, rabbits, and snakes

Answers

Answer:

Rabbits and snakes increase in number but grasses decrease in number.

Explanation:

If the population of hawk is decreases to half then the population of rabbits and snakes increases because hawk feeds on rabbits and snakes. The amount of grasses also decreases due to increase in the population of rabbits which feeds on these grasses. Hawks controls the population of rabbits and snakes when these hawks are decrease in number then the ecosystem will destabilize by increasing number of rabbits and as a result vegetative cover decreases quickly.

Which of the following is true of the composition of all materials?
A.
All materials are made up of large parts that can only be seen by the human eye.
B.
All materials are made up of smaller parts that cannot be seen without magnification.
C.
All materials are made up of living cells.
D.
All materials are made up of only one part.

Answers

Answer:

Option B.

Explanation:

All materials are made up of smaller parts that cannot be seen without magnification.

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