Answer:
Parasitism is when one species benefits and the other is harmed.
Mutualism is when both species benefit.
Commensalism is when one species benefits and the other species is neither harmed nor helped.
Answer: (B) Ridge push and slab pull
Explanation: In ridge push, the mantle wells upward because of the convection and elevates the edges of spreading oceanic plates. Because these plates are higher at the spreading center, they are forced downhill due to gravity and eventually flatten out to the ocean floor.
Some examples of physical evidence that supports scientific theories that earth has evolved over geologic time are the studies have have been done supporting the idea of Pangaea that all the continents were together and with time separated, if you look at a map you can see that the continents almost fits like a puzzle, of course they do not because of erosion and climate change, but it’s the closest example.
