Gene regulation is necessary in the development of multi-cellular organisms because it is necessary to make sure certain things go where they are needed to go. Multi-cellular organisms have more organ systems, therefore depend on more cells to live. Cells have a memory; the genes a cell expresses and the way it behaves depend on the cell's past, as well as its present environment.
Answer:
I think that you meant autotroph, but the answer is producer
Explanation: the definition of autotroph is "an organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide."
D i think again im not sure but thats what i think
Carbohydrates!!! im not sure how to explain it but i just knew the answer so good luck hope that kinds helped