How do i break my leg

why would u want 2?

Explain in the comments why.

a sequence is a function whose domain is the set of natural numbers.

natural numbers are all the negative and positive integers

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.