Which molecule is a source of energy, a store of energy in the body, and can mix with water? a. lipid b. chlorophyll c. nucleic acid d. carbohydrate

The term used to describe a disease-causing microorganism isa. virus. b. infection. c. pathogen. d. microbe. e. bacterium.

Environmental differences within ecosystems are generally caused by

Control of the body is accomplished by which of the following body systems? nervous system and circulatory system endocrine and repertory system circulatory and respiratory systems nervous system and endocrine systems