Sea water is more acidic.
Oceanic crust is thinner and denser than continental crust.
Answer:
b
Explanation:
they are fighting for the same things so it would be competition
A great example is the Galapalose turtles, these turtles ahve tougher shells and longer lifespan, and on each of the two islands the turtles are different. This shows how Darwins theory is put into place