Question 12 human beings generally have an aversion to bitter and sour foods. some researchers suggest that this is because foods that are inedible or even poisonous are often bitter or sour. the tendency of human beings to find these potentially harmful foods repulsive is an example of

The answer is biological preparedness. This is the phenomenon of living things, in this case humans, to associate certain stimuli with a particular response. This phenomenon is also attributed to some phobias in life. It is a case of classical conditioning that improves the chances of survival for humans.

i think it is dna, i'm not totally sure but i think it might be.

answer:

convection currents in the magma drive plate tectonics. heat generated from the radioactive decay of elements deep in the interior of the earth creates magma (molten rock) in the aesthenosphere. the aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the earth that extends to 2900 km.