C from the sun to bird to worm
<span>The upstairs of a house being warmer than the downstairs is an example of heat transfer by -- convection</span>
Answer: this is called passive transport and it does not require energy.
The answer is Phototropism, this is because the tip of the plant moves towards the light and the auxins make the plant elongate on the side with no light.
cholesterol in the cell membrane is to maintain stability, anchor other molecules, and keep the membrane fluid in cold temperatures.
