The good thing about a dam is that electricity can be created by mechanical means. That does not affect the atmosphere. Storing such production is a different matter.
The bad thing about a dam is that it wreaks havoc on the land where the water is stored behind the dam.
Many people hate shots and don't receive the vaccination, causing many illnesses spread around.<span />
Answer:
Atomic Number
Explanation:
The atomic number gives you the number of protons in a given element.