An image is in focus if it forms behind the back surface of the eye.

A. true
B. False

Explanation:

An image is in focus if it forms behind the back surface of the eye. T or F

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.