According to the cladogram, scientists use fossil evidence to anatomically bridge the gap between what two organisms?
a) fish and mammal
b) fish and amphibian
c) amphibian and mammal
d) amphibian and reptile

Which of the following is true of microbes? a. ninety-nine percent of all microbes are pathogenic.b. gene expression in bacteria is very similar to gene expression in humans, which facilitates the use of bacteria in recombinant biotechnology and gene therapy.c. all bacterial enzymes are harmful to humans and the environment.d. microbes create pollutants and toxins that harm the environment.

Apart of an ecosystem that can restrict the growth of a population is referred to as

The terrestrial planets are characterized by having a a.) silicate core b.) iron-rich silicate core c.) iron-rich metallic core d.) none of these