single-celled
in single-celled organisms they perform activities such as eating and reproducing in just one cell.
I think 75% or 90% (I looked it up lol)
Probably occurred with the presence of a catalyst (enzyme)
Answer:
the food web
Explanation: A food web is a conceptual model that represents the flow of energy through an ecosystem.
Answer:
the first question answer is C and for the second one is D