Which statement best explains why herbivores are not considered parasites? a. they do not harm the plants they eat. b. they do not live on or in the body of a host. c. they do not depend on the plants they eat for survival. d. they do not actively hunt other species for food.

The oxidizing agent our bodies use to obtain energy from food is oxygen (from the air). if you breathe 15 times a minute (at rest), taking in and exhaling 0.5 l of air with each breath, what volume of air do you breathe each day? air is 21% oxygen by volume. what volume of oxygen do you breathe each day?

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

The large increase in atmospheric carbon dioxide in the last 50 years most likely comes from a. an increase in cellular respiration b. increased decomposition by bacteria c. an increase in the burning of fossil fuels d. an increase in photosynthesis