The answer is A, and this is true because trauma can not be transmitted or caught by humans or animals but a virus , faulty nutrition & congenital defects can. hope this helps :)
Its compares its self to its parent because its an exact copy of the genes... They are essentually twins.....
A. they are drugs or hormones used to prevent osteoporosis
The correct answer would be option A. Leafy gametophytes. The feature that differentiates mosses from liverworts and hornworts are the leafy gametophytes. A gametophyte is a multicellular haploid generation which is involved in the process of alternation of genes along with a diploid generation called as sporophyte.
C because he is making a hypothesis that coloration which is the independent variable is making the change.