Afire hits an old forest with large, old trees. a large section of the forest is burnt down. over many years, new, immature trees replace the old ones. how can the new area be characterized?

If the old trees which were burn down are now replaced by new ones, the new area can be characterized as a SECONDARY FOREST. A secondary forest is a disrupted woodland area which has re-grown such that the effects of the disruption are no longer evident.

"d.) carbon dioxide and hydrogen sulfide"

i might be wrong but i think its a. let me know if i’m right and have a good rest of your day!