The digestive system contains a variety of parts that perform specific functions within the body. the small and large intestines have some similarities and some differences. which function is only performed in the small intestine?

One gene can influence trait(s). one trait can be determined by gene(s).

What percentage of light hits earth's surface directly?

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."