The topographic map below has a contour interval of 20 feet. points a an b represent location on earth surface

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

Can a trait be both polygenic and have multiple alleles? explain why or why not.

Sequence how oxygen accumulated in the atmosphere and the effect it had on life by completing the flowchart