Answer:
Oxygen and Carbon dioxide
Answer:
volcanic eruption
Explanation:
"The environmental change that occurs faster is definitely volcanic eruption. It may happen in an instant and destroy everything in its way, whereas the process of regrowth of forest after volcanic eruption is a slow one."
B. condition characterized by a low white blood cell count.
D. (CH2O)n is the general formula
I believe it is B. DNA Nucleotide, C. Codon, D. Gene, A. Chromosome