Because of human intervention, the former tend to be simpler and more predictable, because fewer organisms--crops or animals--are involved and everything is monitored/
Answer:
the first option is correct
Explanation:
in a food pyramid the base is always producers.
I think it's true, cause an arch is produced when waves erode through a cliff.
Answer:b. oceanic crust to continental crust collision
Explanation: Oceanic plates are heavier than continental plates. When they collided the oceanic plate went down.
