Predict how an ecosystem would respond if either its producers or decomposers
were removed. Be sure to explain your reasoning.

The ecosystem would collapse if producers were removed.

Explanation:

The primary consumers populating would decrease due to lack of food and if a species doesn’t have food they most likely won’t reproduce. The secondary consumers won’t have enough food either because their prey being the primary consumers would die off. All this leads to the down fall of ecosystem.

regulation of gene expression. gene expression can be regulated by various cellular processes with the aim to control the amount and nature of the expressed genes. these regulatory proteins bind to dna and send signals that indirectly control the rate of gene expression

explanation:

the answer would be d