The answer would be C.) Keystone species due to the vital role the sea otter has in order to regulate the ecosystem.
Depends on what type of teeth
if carnivore teeth than they can be similar by both being sharp and used to test through meat but could possibly be different size.
or herbivore teeth. can be both a the shape of your front teeth and be different by shape.
or omnivore teeth. can be different by the sharp and dull teeth. like in your mouth.
The answer is Mutualism because they are both benefiting
A. Water falls from the atmosphere as rain, ice, or snow
The Sun is the main cause for our weather, and different season (in different areas where you live it depends on how hot or cold it is also caused by the sun)
Most seasons, like in summer it's hot Also caused by the sun, in winter it snows because the sun is in a different location.
