Is an oily substance that lubricates hair and skin and reduces water loss through the skin?

We want most cells to be even in and out which is called

How is the male reproductive system different from other body systems? it isn’t necessary to vital signs. it monitors other body systems, and adjusts if necessary. it transports items from one system to another. it is the only system that produces hormones in the male.

What do transitional fossils best support?