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Roman55 [17]
3 years ago
10

Identify how the physical barriers of the the immune system protect the body against pathogens

Biology
1 answer:
BabaBlast [244]3 years ago
7 0

Answer:

They help to stop harmful germs from entering the body

Explanation:

  • The skin can prevent bacteria and microorganisms from entering the body (unless it is damaged)
  • Mucous membranes line the mouth and nose and are coated with secretions that fight microorganisms and harmful bacteria
  • Tears help to clear debris from the eye to prevent infection
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Answer:

The volume of space in an atom where an electron is likely to be found is called the orbital of that electron.

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Natural selection relies on genetic variation. In any population of beetles, there are alleles for brown or green color. What ha
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The correct order for natural selection can be summarized as:

1. Inherited variation: Individuals among the population exhibit inherited variation such as body color, body size, hair colors, voice properties, et cetera.

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For example, Natural habitat is in trees. Green leaves hide green beetles.  

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Birds eat brown beetles.

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For example, green beetles reproduce in greater number than brown beetles.

4. Adaptation: The organisms with survival traits tend to survive more and pass their traits to the future generation.

For example, more green beetles survive than brown beetles.

5. Evolution: The change in allele frequency of the population takes place.

For example, beetle population changes from brown and green to mostly green beetles.

Thus, the correct order would be:

1. The population of beetles: an equal number of green and brown beetles.

2. Natural habitat is in trees. Green leaves hide green beetles.  

3. The brown beetles are noticed by birds in the area.

4. Birds eat brown beetles.

5. Green beetles reproduce in greater number than brown beetles.

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