An organ that produces a secretion called hormones is called a

Cells tend to have a relatively small and uniform size. why aren’t cells larger?

Why is the theory of evolution important? it disproves all other theories about how life began. it provides a topic for debate. it is a unifying concept in biology. it explains how life began. i know for sure, it is not "it is a unifying concept in biology."

2. sketch the inside of the bean nodule, and describe or label what you observed with the hand lens.