How many seismic sensors do you need to determine the epicenter of an earthquake?

the answer is a. co2, this would be colder than the : )

explanation:

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.

the correct answer would be b) volume versus temperature, because they are also directly proportional.