Anaerobic respiration is used in conditions that: A. require nitrogen. B. are depleted of glucose. C. have too much oxygen. D. are depleted of oxygen.

Pick twenty foods and research the amount of total carbohydrates, sugars, and other carbohydrates in them. note: most food labels have this information. record your findings.

What organ is the first to receive nutrients that have been absorbed from the digestive tract?

Rarefaction is used for which of the following? a. creating a representative sample b. studying how disease impacts populations c. rediscovering species thought to be instinct d. determining which sea creatures live in an area