Should be A. Species have changed over time.
The process that occurs before hypothesis is Identifying the variables.
Answer:
Definition (http://en.wikipedia.org/wiki/Saprophytism) Saprotrophic nutrition is a process of chemoheterotrophic extracellular digestion involved in the processing of dead or decayed organic matter. It occurs in saprotrophs or heterotrophs, and is most often associated with fungi, for example Mucor and Rhizopus. (
Explanation:
About 10% because I know about 90-95% of DNA is junk DNA(doesnt perform serious function)
That a person is heterozygous for a certain trait. Rr=heterozygous and RR= homozygous. You can remember this because Hetero= different and homo= same
