In humans and other organisms, Which substance plays a central role as an energy sourse? A. water
B. carbs
C. fat
D. protien

that scientist would be robert hooke

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.

well, i believe that the answer is 2. : 3

the circled areas are referred to   as sunspots.   the sunspots are cooler than the   surrounding area.

sunspots are temporary phenomena on the photosphere of the sun that appear visibly as dark spots compared to surrounding regions. they correspond to concentrations of magnetic field flux that inhibit convection and result in reduced surface temperature compared to the surrounding photosphere.