The answer is B: proteins and lipids.
Also carbohydrates
The answer is B because viruses don't need to be fed.
Answer:
The changes which can be reversed are called reversible changes. These are also called physical changes. Example- Melting of ice, Tearing of paper etc are physical or reversible changes.
Explanation:
Answer:
the size of something from one end to the other; how long something is
- Running race track
- tree
