Which is one function of steroids? 1.)Waterproofing leaves and feathers
2.)insulating and protecting bones and organs
3.)serving as chemical messengers
4.)providing energy storage

his research revealed two genetically different groups of prokaryotes, which justified splitting kingdom monera into two kingdoms. the genetic and cellular differences were so great, that these two kingdoms were eventually placed into different domains in the current three-domain system.

voluntary muscles are controlled by the cerebellum.