A earthquakes because the plates will suddenly shift quickly or gring quickly causing the ground to move because of the tectonic plates.
Neon belongs to 2nd Period & 18th Group
I believe that the best definition of the word common in environmental science is a typical resource. A typical resource is a resource that is not hard to find and is very common. The answer to the question will hence be A.
The answer could not be the other three choices because a shared resource is a resource that is used by more than one organism in the environment. A worthless resource is one that has no use in the environment while a rare resource is one that is hard to find.
Plantae, as trees and flowers are examples of plants.