Why is a shell considered to be biotic? because it is found in the biosphere because it was alive because it came from something living because it is not living

What did hunter gathers do to alter the environment?

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.

What is the identity of the planets?