False , he worked on Bacterial Genetics years before the discovery on DNA so it wasnt DNA.
The law of conservation of matter is that matter cannot be destroyed, it can only be changed. Really, any cycle is an illustration because, in cycles matter is not destroyed, only changed.
In simple words: The hydrologic cycle illustrates the law of conversation of matter through the matter in this cycle not being destroyed, only changed.

Actually Welcome to the Concept of the energy conversion
=> ATP can be used to store energy for future reactions or be withdrawn to pay for reactions when energy is required by the cell.
=> When one phosphate group is removed by breaking a phosphoanhydride bond in a process called hydrolysis, energy is released, and ATP is converted to adenosine diphosphate (ADP).
Answer:
gradual increase in the overall temperature of the earth's atmosphere generally attributed to the greenhouse effect caused by increased levels of carbon dioxide, chlorofluorocarbons, and other pollutants.
Explanation:
B. Golgi Apparatus.
All eukaryotes have a Golgi apparatus though not all have the other organelles named above. They all have it because of it's indispensable function, transportation of lipids and the preparation for secretion an secretion of proteins.
The other part mentioned have important functions but that varies from cell to cell according to their functions.
Hope it helped,
BioTeacher101