B- maintaining a stable internal environment.
The first line of barrier that support the immune system by the invading microorganisms is formed by the skin and the mucous membrane.
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What is immune system?</h3>
A network of biological processes called the immune system guards an organism against disease.
<h3>How do skin and mucous membrane support the immune system?</h3>
The skin acts as the first line of defense and has specialized immune cells that help prevent the microorganisms from entering the body.
The mucous membrane which is more sensitive and lines up the internal organs of the body can sense and eliminate the microorganisms thus helping the immune system.
Learn more about the immune system with the help of the given link:
brainly.com/question/13257880
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Answer:
The basic parts of a landfill, as shown in Figure 3, are: Bottom liner system - separates and from groundwater. (old and new) - where the is stored within the landfill. Storm water system - collects rain water that falls on the landfill
Explanation:
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