Answer:
Parasitism is when one species benefits and the other is harmed.
Mutualism is when both species benefit.
Commensalism is when one species benefits and the other species is neither harmed nor helped.
During photosynthesis, plants trap light energy with their leaves. Plants use the energy of the sun to change water and carbon dioxide into a sugar called glucose. Glucose is used by plants for energy and to make other substances like cellulose and starch
Answer: D
Explanation:
Crossing over refers to homologous chrosmomes exchanging DNA which creates variation of chromsoomes that are inheried by offspring.
This question isn't really finished, but bacterium are unicellular prokaryote.
I hope this helps?.. :S
