A very persistent pollutant would

A. Biodegrade immediately
B. Be the easiest kind to remove
C. Only be made up of natural elements
D. remain in the environment for a long time

Most scientific questions are based on opinions. hypotheses. observations. experimental data.

Anita thinks that she has heterozygous alleles for red hair. if she is correct, which of these diagrams best illustrates anitas alleles pf red hair

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.