Which of these organisms decompose dead plants and animals? a) Crows and raccoons
b) fungi and bacteria
c) Vultures and hawks
d) chameleons and raccoons

Which of the organisms listed below performs nitrogen fixation? a. legumes b. plants c. bacteria d. fungi

The hematodinium parasite becomes less of a problem for the blue crab when the crab is very young. fishing is thriving in the region. the crab moves to less salty water. a significant percentage of the population is impacted.

Why do some dna fragments move farther than others during gel electrophoresis? a. because their shapes are different b. because they are different types of molecules c. because the samples are different colors d. because their masses are different