Which of the following is an example or an orginasm mantaining homeostasis boy riding a bike a cat grooming itself a bear nursing her cubs a man sweating while he runs

What are the applications of electromagnetic waves

Can anybody me with this? ? (picture included.)

This is a form of winter precipitation. it is frozen precipitation falling as ice pellets. snowflakes melt into raindrops as they pass through a thin layer of warmer air. the raindrops then refreeze into particles of ice when they fall into a layer of sub-freezing air near the surface of the earth. this precipitation is called a) hail. b) rain. c) sleet. d) snow.