Why do the leaves of some tree change colors in autumn

Dna. we have heard that we are a product of our dna. but where is it? how do we "get" our dna? it is passed to us, from our parents, but in what form? several vocabulary words associated with inheritance are used interchangeably and sometimes, incorrectly. let's see if you can clear this up for someone just learning about inheritance and cell structure.

In "the man in the water," what was the remarkable occurrence that rosenblatt reported?

Which kingdom includes some organisms that have no nucleus and can live in an environment with an extremely high salt content