Which of the following is true of the composition of both DNA and enzymes such as DNA lipase? A. Nitrogen and oxygen are the only elements they have in common.
B. Carbon and hydrogen are the only elements they have in common.
C. They are made up of basic units called amino acids.
D. They are made up of long chains of a basic unit.

Asnail, elodea (aquatic plant), or both were added to the tubes and they were stoppered. tubes were placed under a grow light for 24 hours and the results recorded. the test tubes were then covered for 24 hours to produce a dark environment and the results recorded. which statement best explains the change in test tube d from the light setup to the dark setup.

Iwill give brainiest to first person who gets it ! what are 3 basic types of interactions we see in an ecosystem?

This connective tissue consists of large round densely packed cells with the nucleus pushed to one side.