Which of Charles Darwin’s main points is depicted in the image?

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.

igneous rocks which formed by the crystallization of magma at the surface of the earth called extrusive rocks. they are characterized by fine-grained textures because the rapid cooling at or near the surface did not provide enough time for large crystals to grow.

a lot of people sadly don't know the best way to learn is cheating off of your friends or this amazing thing called google