Can individuals of different but closely related species mate?

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?

The diagram shows the layers of earth. convection currents in which region influence the movement of tectonic plates

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.