I need help plz this question i dont understand

Pine trees

Explanation:

it says "biotic factor" and the prefix bio means life. Pine trees is the only answer that has to do with any kind of life form :)

the "dirty dozen" chemicals banned in an international treaty are formally known as persistent organic pollutants, or pops. the united nations environment program provided this background on what they are and what they can do to humans and wildlife.

i hope this

the cost of mining is extremely low compared to the money earned from mining, creating income to improve the environment.