What is taxonomy? a. the scientific study of how living things are classified b. the name of aristotle’s classification system c. the process used by geologists to classify rocks d. the process of observing an organism’s behavior

Blood has traveled from the heart to the toes. which describes the next step of the circulation process?

When is your respiration rate likely to change? a. when your intestines are digesting b. when your cells have too much glucose c. when your cells need more oxygen d. when your liver is working after a meal

What is one way intensive agriculture can contribute to climate change? a. tree loss to agriculture increases earth's albedo b. livestock manure absorbs greenhouse gases c. large herds of livestock release greenhouse gases d. fewer trees are available to replenish petroleum stores appex