What did the cell components is least likely to affect the visible traits of an organism

How did the research presented in the article affect scientists' understanding of the evolution of eukaryotes

Which part of the neuron below is indicated by the arrow, and what is its function? hormones send chemical signals throughout the body to regulate other body processes. hormones are chemical signals that are sent throughout the body to regulate other body processes. hormones send electrical signals throughout the body to regulate other body processes. hormones are electrical signals that are sent throughout the body to regulate other body processes.

There are fewer than 100 naturally occurring elements in the universe, but there are millions of different unified substances. explain how this can be true.