Answer:
Explanation: Radiation is divergence out from a central point, in particular evolution from an ancestral animal or plant group into a variety of new forms.
Ectotherms vs. endotherms
sun is Earth’s principal source of radiative energy. With a surface temperature of
approximately 6000K, the sun’s electromagnetic radiation transmits some of this heat in the
form of infrared radiation to our atmosphere and to varied surfaces on Earth