The graph below illustrates the growth curves for two types of bacteria, a and b, as the ph of their surrounding mediums change.

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.

Which process of living things produces water that enters the water cycle

Are the layers of rock above and below the coal older or younger?