I believe (1) fertilization is correct
The answer to the question if i remember right is chemical
weathering
If a cell is grown in a medium containing radioactively labeled thymidine--which is one of the nucleotides needed to synthesize DNA--after the first round of replication, all of the DNA molecules will have one labeled strand and one unlabeled strand. Why? Because the radioactively labeled thymidine will be incorporated into the newly synthesized strands. If the cell undergoes ANOTHER round of replication in the same medium, the same sequence of events will occur.
Answer:
Bacterial and viral infections can cause similar symptoms such as coughing and sneezing, fever, inflammation, vomiting, diarrhea, fatigue, and cramping. All of these are ways the immune system tries to rid the body of infectious organisms.
Explanation:
What are all of the organisms and what is organism number 7?