The worlds coral reefs are being damaged by harmful runoff, which new research shows it’s being caused by the clearing the forest. Scientist say that when the forest cover is lost, soil washes away into Rivers that flow into the oceans and, they believe onto coral reefs. that runoff adds nutrients to the ocean water.
Answer:
The answer for writing 421,700 km in scientific notation is A
Yes the earth is changing due to the plate tectonics because when the earth ah earthquakes and all that kind of stuff here comes earth and reshapes it.
