In eukaryotes, dna a. is located in the nucleus. c. is located in the ribosomes. b. floats freely in the cytoplasm. d. is circular. select the best answer from the choices provided a b c d

Environmental impacts on evolution : mastery test

What is the problem in this article? what solution does the article propose?

Which of the following types of pollution is most responsible for large numbers of deaths worldwide because of unsafe drinking water? (a) nutrient pollution (b) thermal pollution (c) pathogen pollution (d) sediment pollution