C. Reforestation is the right answer
Answer: cellular respiration
Explanation: I hope this helps
B. It can cause widespread death
it can also
C. It may seriously impact healthy adults.
flu is caused by a virus (influenza) NOT bacteria
Vaccines are made, but may not necessarily be available for a pandemic right away (takes time to develop).
I believe this difference in concentration of dissolved Particles from one location to another is called a concentration gradient.