The answer you are looking for is trade winds.
I believe the correct answer among the choices listed above is option A. Parasitism is the kind of interaction that is shown here. Parasitism is a kind of relationship where one feed off the other. Fleas here are referred to as the parasite and the dog is the host.
The temperature of the crust is much cooler than the interior.
Hope this helped :)
Bohr models show the number of electrons (regular and valence) which helps determine which sort of should take place.
This is correct!!
