What is a retaining energy

Energy retention. The amount of energy that can be retained, rather than dissipated, depends on several architectural factors. These include the size, shape, style, orientation, and construction of the building, as well as the insulation, heating/cooling, and envelope systems within the building.

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.

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).