* ANSWER ASAP *

Where are the largest reservoirs for the phosphorus and sulfur cycles located?

a.) atmosphere

b.) cryosphere

c.) lithosphere

d.) hydrosphere

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.

To determine if a particular plant is homozygous or heterozygous, you would have to test cross with a

Crossing over is a method of (blank)?