The answer of the first question is double fertilization !!! I don't get the second question so.... comment if you have that question !!!
Answer:
No, they are not. The concept of human races appears to be solidly grounded in present-day biology and our evolutionary history. But if you asked that conference of geneticists to give you a genetic definition of race, they wouldn’t be able to do it. Human races are not natural genetic groups; they are socially constructed categories. Genes certainly reflect geography, but unlike geography, human genetic differences don't fall along obvious natural boundaries that might define races.
They release carbon dioxide into the atmosphere which in effect create green house gasses
Pretty sure the correct answer would be Choice A
