How might earth be different if there was only one type of biome?
would it be possible to have only one type of biome? why or why not?

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.

This is a situation in which genes are attached to an organism's sex chromosomes; the sex of an organism influences the expression of a gene.

Which structure in the cardiovascular system connect arteries to veins?