Ais a substance containing incomplete portions of a virus that produce an immune response when injected into the body.

Explain how the number of similarities between the embryos from early stage to late stage is used as evidence of a common ancestry

Identify characteristics of energy from the sun. check all that apply. almost all of the energy on earth comes from the sun. energy from the sun is known as mechanical energy. the energy in fossil fuels originally came from the sun. plants convert the energy of sunlight into chemical energy.

What are some natural processes that represent physical and chemical changes?