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
Evgesh-ka [11]
2 years ago
15

Which is of the following is necessary for natural selection? 1. There must be a shortage of food 2. There must be a change in t

he environment, causing individuals to change 3. There must be some genetic differences among the individuals of a species 4. all of the above
Biology
1 answer:
Oksanka [162]2 years ago
8 0

Answer:

It's 3!

Explanation:

There must be genetic differences so the best fitted organisms will survive. If they were all the same then no one would be best fitted and Natural Selection wouldn't be able to occur

It's not 1 because a food shortage isn't required, there's always competition for food sources

It's not 2 because there doesn't need to be a change in the environment for natural selection, just for evolution.

And it can't be 4 if 1 and 2 are wrong!

Hope this helped!

You might be interested in
In which layer is the temperature the lowest?
sergey [27]

Answer: the outer core

this is because it it furthest away from the centre of the earth that contains most heat. the furthur away from the centre the more cooler. #answerwithquality #BAL

8 0
2 years ago
Describe the process of scientific inquiry and explain why it is not a rigid sequence of steps.
jek_recluse [69]
The scientific inquiry or scientific method is a systematic approach used in means of acquiring new knowledge and it is not just a rigid sequence of steps because they are made uniquely in which the way that they are being followed is based on the problem that is trying to be solved that makes it something that is not a rigid sequence.
3 0
2 years ago
Which gas is responsible for global warming and Which gas is responsible for ozone layer depletion?
Bess [88]

Answer:

Green house gases like carbon dioxide, carbon monoxide, carbon tetra chloride, methane, sulphur dioxide, nitrogen dioxide, etc .. are responsible for Global warming and Chlorofluorocarbons and nitrides of oxygen are responsible for Ozone layer depletion.

Explanation:

One of the first things the IPCC concluded is that there are several greenhouse gases responsible for warming, and humans emit them in a variety of ways. Most come from the combustion of fossil fuels in cars, buildings, factories, and power plants. The gas responsible for the most warming is carbon dioxide, or CO2.

Chlorofluorocarbons (CFCs) and other halogenated ozone depleting substances (ODS) are mainly responsible for man-made chemical ozone depletion. The total amount of effective halogens (chlorine and bromine) in the stratosphere can be calculated and are known as the equivalent effective stratospheric chlorine (EESC).

7 0
3 years ago
How does that landslide change the
Vika [28.1K]

Answer:

The correct answer is - Increase in competition. destroy habitat, water and resources scarcity, and reduction in population.

Explanation:

Landslides are the movement of debris, rock, or land. It can be lethal and affects the ecosystem in various ways. The major effect on the ecosystem is destroying the resources and habitat of the organisms and even pollute water streams and water bodies with excess debris and sediment. It affects water quality and aquatic organism's habitat.

It destroys a large part of habitat such as forest, shelter and affects the life on the particular ecosystem. The reduction of the plants and vegetation leads to a reduction in food which increases the competition.

7 0
2 years ago
Which one of the five is least like the other four?
bulgar [2K]
The one I think is the snake because  it does not have 4 legs.
4 0
3 years ago
Read 2 more answers
Other questions:
  • true or false: a phenotype describes the physical expression (characteristics) of a gene. In other words, how something looks.
    11·1 answer
  • Tara has just entered the fetal period. therefore, it has been ________ months since conception.
    10·2 answers
  • What happens to ammonia when it isn’t taken up by plants?
    11·1 answer
  • Choose the best description of the relationship between evolution and natural selection.
    13·2 answers
  • Strolling in the Sonoran Desert, you come upon a stately Saguaro cactus. The large central "trunks" of this cactus are covered w
    14·1 answer
  • Explain how wastage of food and defosteration contributes to global warming
    9·1 answer
  • The table below shows the number of chromosome pairs for various
    10·1 answer
  • What is breeding,explain in fully ?​
    9·2 answers
  • What is a squall line
    5·2 answers
  • The backbone of a nucleic acid molecule is made of
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!