Which of the following takes the least amount of energy and uses the fewest natural resources? (Select the best answer.)
Reducing
Downcycling
Reusing
Recycling

Which of the following are false concerning microbes? a. microbes generate oxygen through photosynthesis.b. the primary role of microbes on the planet involves causing disease in animals and humans.c. microbes produce vitamins in the intestines.d. microbes play a role in breaking down waste and decomposing dead organisms.

Which of the following occurs after a natural or unnatural disturbance in an ecosystem

How many chromosomes are in a gold fish?