One of the materials needed for photosynthesis is sunlight or water
Answer:
d carbon dioxide
Explanation:
Carbon dioxide is a pure substance that is a compound (two or more elements bonded together).
The purpose of the uninoculated control tubes used in this test is that two uninoculated control tubes are needed to show the results of the medium in both aerobic and anaerobic environments. It is used to show it is sterile and also as a color comparison, used also to show that the medium remains green under both conditions.
The part which would indicate that this compound is amine is located in the upper part attached to the second carbon atom or the middle carbon atom. It is an NH2 attached to the carbon atom. Amine is a derivative of ammonia, where one hydrogen atom of the ammonia is being replace by an alkyl or aryl group.
