How did the doctrine of nullification uphold the founding principles?

During a fierce storm a large number of tall trees on an island are uprooted by the wind and die. most of the trees on the island are now short trees and produce seeds that grow into short trees. what concept is shown in this example? question 5 options: natural selection artificial selection genetic engineering gene splicing

During the past 150 years in the united states, how did energy consumption compare to population growth?

Accuracy is a measure of how consistently a result is determined by repeated evaluations a. true its true b. false