1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Anna [14]
4 years ago
7

The modern theory of evolution states that a basis for variation within a species is provided by

Biology
1 answer:
Likurg_2 [28]4 years ago
7 0
The modern theory of evolution states that a basis for variation within a species is provided by mutations.  It plays an important role in evolution. The best source of all genetic variation is mutation. It is important as the first step of evolution<span> because it creates a new DNA sequence for a particular gene, creating a new allele.</span>
You might be interested in
How do ecologists use modeling
FrozenT [24]
It allows them to study the interactions of multiple variables and simulate large scale experiments
6 0
3 years ago
Which two sentences describes unethical behavior by a scientist
Mkey [24]

The sentence that states that " When Donnie is unhappy with how an experiment has turned out, he chooses not to share his findings with the public or his colleagues"

"he continues performing an experiment until he reaches the conclusion that he wants and expects. "

8 0
3 years ago
Read 2 more answers
The half-life of silicon-32 is 710 years. If 70 grams is present now, how much will be present in 200 years? (Round your answer
elena-s [515]

Answer:

57.7 grams

Explanation:

Given -

Half life of the silicon-32 = 710 years

Half life means the time period required by a radioactive element to reduce its mass by half.

Radioactive decay formula is

A = A_o*2^{\frac{-t}{h} }

Where

A represents the amount of radioactive element after time t years

A_0 represents the initial amount of radioactive element

t = time of decay

h = half-life of the substance

Substituting the given values in above equation, we get -

A = 70 * 2^{\frac{200}{710} \\

A = 57.7 grams

6 0
4 years ago
Which of the following best explains how farmers can stop leaching? grow more nutritious crops use better farming equipment use
Grace [21]
The answer would be : use less water while farming

reason: leaching happens when excess water takes water soluble nutrients out of the soil, so less water would stop leaching from occuring.
8 0
4 years ago
Joe begins to experience mood swings and disturbed thirst and hunger. Imaging studies indicate that a brain tumor is the likely
const2013 [10]

Answer:

The correct answer will be-hypothalamus

Explanation:

A tumor is the group of abnormal cells formed due to uncontrolled division of the cells. When it is present in the brain is known as a brain tumor.

When tumor is formed in the brain, it presses the part of the brain physically and thus disrupts the functioning of that part of the brain.

In the given question, since the patient experiences the disturbing hunger and thirst which is controlled by the hypothalamus of the brain therefore the tumor would have formed in the hypothalamus.

Thus, -hypothalamus is the correct answer.

8 0
4 years ago
Other questions:
  • during the paleozoic and mesozoic eras plate movements were rapid. this caused many volcanoes to occur. how could this impact th
    11·1 answer
  • What is the primary way that metamorphic rocks form?
    14·2 answers
  • During a routine prenatal visit, ms. t. was noted as having dependent edema, varicosities of the legs, and hemorrhoids. she expr
    11·1 answer
  • Which of the following correctly pairs labels of animals with the way they feed?
    6·2 answers
  • Which is an accurate description of the processes used to turn the DNA code of a gene into a protein?
    6·1 answer
  • Which statements describe thigmotropism? Check all that apply.
    10·2 answers
  • Igneous rocks turn into sediments through the process of ______.
    7·1 answer
  • The process by which natural variation among organisms that make them best adapted to their environment live and reproduce, ther
    6·1 answer
  • - These are gram- negative. Find the motile Coccobacilli from following.
    5·1 answer
  • Who was the first prime minister of USA​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!