is the chemical reaction below A. Kinase B. mutase C. dehydrogenase D. isomerase E. none of the above

Legumes, a type of plant, require rhizobia, a type of soil bacteria, to survive since these organisms fix nitrogen during photosynthesis. rhizobia use the legumes for food. what would most likely happen to the legume population if rhizobia suddenly became extinct?

Which is an example of a vestigial structure? a. tail of a monkey b. fin of a fish c. flower of a plant d. tailbone of a human

Do you think humans have a moral obligation to preserve the habitat of the chimpanzee