Which is "not" one of the basic characteristics of life? a. reproduction
b. response
c. digestion
d. air

Which of the following is the best definition for the process of photosynthesis? a.) plants digest sugars to make energy. b.) plants use oxygen and glucose to make carbon dioxide. c.) plants use sunlight and carbon dioxide to make sugars. d.) plants use sunlight to make chlorophyll and chloroplasts.

Hemoglobin is a proton that carries oxygen around the body what is hemoglobin made from

Which of the following is not a type of epithelial cell