What are the differences between the three types of Precambrian rocks found in Virginia? Why do you think they are all located near each other?

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

What is the primary goal of human communities?

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.