Science ! ty : ]
according to newton's second law of motion, if a rigid body of unchanging mass is observed accelerating, what must be happening?
a force is being applied to the mass
the mass must be changing.
a force was once applied, but is now not being applied.
no force was or is being applied to the mass.

How does natural selection change thephenotypes within a population over time?

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

Which of the following would involve looking at different structures of organisms and comparing how similar they are? a. vestigial structuresb. radiometric datingc. homologous structures