When the Sun, Moon, and Earth are lined up, the high tides will be than normal, and the low tides will be than normal.
A. lower; lower
B. lower; higher
C. higher; lower
D. higher; higher

C

Explanation:

When the sun, moon and earth are lined up, it's called a spring tide. The gravitaional pull on the water is strengthened, so the tides will be higher and lower than normal.

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.

one negative thing it that it can kill water animals. another negative thing is it can cause the destruction of ecosystem. one way water pollution can be reduced is to conserve energy.