Valence of oxygen is negative two.
Answer:
pollution/gas/plants/animals/littering
Explanation:
find a article that talks about those. start you sentence off by saying the things the our making our enverment bad and try finding quotes from the article you choose
<span>a and c could be true
Animals don't have peace treaties with each other and the other two options would both allow a population to increase in size.</span>
They have longer periods of revolution.
