Cells are the basic units of structure and function of...
A. biotic components.
B. living things.
C. ecosystems.

The deserts of the sahara and australia are associated with

Which must be kept in mind when determining if an explanation is correct? check all that apply.which must be kept in mind when determining if an explanation is correct? check all that apply.

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above