Where are the coldest parts of the atmosphere located?
a) troposphere
b) stratosphere
c) mesosphere
d) thermosphere
the correct answer is c) mesosphere

Which element provides strength to the exoskeleton of clams and oysters

Study the diagram of a cell. which structure is found only in plant cells and functions in the process of photosynthesis? w x y z

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