Answer:
pumps/channels
Channels are a type of facilitated diffusion.
Pumps are a active transport system to any living thing. So, the answer is pumps/channels.
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Answer:
the land become populated
The headings complete the table are X = waxes and Y = sterols; option A.
<h3>What are lipids?</h3>
Lipids are fatty, oily, or waxy water-insoluble substances found in living organisms.
Lipids are of many classes and types and they perform several functions in the body.
Some classification of lipids are given below:
Waxes:
- prevent dehydration of plants
- are a protective layer on hair or feathers
- are tightly packed fatty acid chains joined to long-chain alcohols
Sterols:
- are found in cell membranes of plant and animal cells
- consist of four carbon rings with no fatty acids
- serve a role in aiding fat digestion
In conclusion, lipids are important biomolecules found in the body.
Learn more about lipids at: brainly.com/question/17352723
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C. I believe this is correct