the answer is a it can be used as an energy source by organisms
The answer is sex cells or gametes
Your body through the cells
A. Cell membrane would be the answer.
1. The plant should not have leaves. To prevent transpiration from taking place
2. Plant should be well watered. Plants need water
3. Put some Vaseline to seal open gaps. This prevents water evaporation
Unfortunately I don't have the 4th one :/
