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
MariettaO [177]
3 years ago
13

Why is genetic variation a prerequisite for evolution??

Biology
1 answer:
algol133 years ago
5 0
Genetic variation is a prerequisite for evolution because natural selection relies upon lessening the frequency of alleles in a population therefore there must be variance in the gene pool
You might be interested in
W why do immune system cells contain large amounts of lysosomes
vovikov84 [41]
Some of those lysosomes contain secretions that will help the immune cells destroy foreign pathogens. 
Hope that helped you.
5 0
3 years ago
Read 2 more answers
List four landforms created from lava and ash<br>Please? For the sake of Jeff the snowman? ⛄
Anna11 [10]
Shield volcanoes<span>, </span>stratovolcanoes<span> or composite</span>volcanoes<span>, lava domes and </span><span>flood basalts</span>
6 0
3 years ago
Another feature of being alive is a very high level of
Gala2k [10]
Blood circulating in your body.
4 0
3 years ago
PLEASE HELP EMERGENCY!! IF YOU ARE NOT 100% SURE ABOUT YOUR ANSWER DO NOT ANSWER THEN!! PLEASE!!
marysya [2.9K]

Answer:

Lung disease is any problem in the lungs that prevents the lungs from working properly. There are three main types of lung disease:

Airway diseases -- These diseases affect the tubes (airways) that carry oxygen and other gases into and out of the lungs. They usually cause a narrowing or blockage of the airways. Airway diseases include asthma, COPD and bronchiectasis. People with airway diseases often say they feel as if they're "trying to breathe out through a straw."

Lung tissue diseases -- These diseases affect the structure of the lung tissue. Scarring or inflammation of the tissue makes the lungs unable to expand fully (restrictive lung disease). This makes it hard for the lungs to take in oxygen and release carbon dioxide. People with this type of lung disorder often say they feel as if they are "wearing a too-tight sweater or vest." As a result, they can't breathe deeply. Pulmonary fibrosis and sarcoidosis are examples of lung tissue disease.

Lung circulation diseases -- These diseases affect the blood vessels in the lungs. They are caused by clotting, scarring, or inflammation of the blood vessels. They affect the ability of the lungs to take up oxygen and release carbon dioxide. These diseases may also affect heart function. An example of a lung circulation disease is pulmonary hypertension. People with these conditions often feel very short of breath when they exert themselves.

Explanation:

Put it your own words cause this is kinda advance for 7th

5 0
2 years ago
Read 2 more answers
The light independent reactions produce ______________ and _______________ which are used in the light dependent reactions.
enyata [817]

<span>ADP stands for Adenosine DiphosPhate. ADP is a compound with two instead of three phosphate groups.</span>

During light-independent reactions, ATP and NADPH from the light-dependent reactions are used to produce high-energy sugars that can be stored for a long ADP which are used in the light dependent reactions. Correct answer: D

8 0
3 years ago
Read 2 more answers
Other questions:
  • Macy has hired 400 store sanyas. If each Santa sees 125 children a day for 30 days, how many children are seen by mac's santa
    6·1 answer
  • Eukaryotes that are not members of the plant, animal, and fungi kingdoms are called ____. A. protists B. decomposers C. microbes
    6·2 answers
  • Name the regulatory factor in childbirth
    6·1 answer
  • What is the genotype ration between the cross YyRr x YyRr?
    15·1 answer
  • Which of these genes is not a part of the lac operon?
    12·2 answers
  • Which of the following is NOT part of the quadriceps group? *
    12·1 answer
  • Please hurry I need the right answer and I will give brainliest for the right answer no alien talk or file
    5·2 answers
  • Cual es la importancia de la genética y la herencia, desde el punto de vista científico y social?
    9·1 answer
  • Complex traits follow different patterns of inheritance and involve multiple genes or other factors these patterns include
    5·1 answer
  • Point where crossing over takes place between chromatids of the homologous chromosomes during prophase 1
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!