Canadian shield is composed of Precambrian rocks that cover 2.8 million square miles.
Answer:
It was an difficult place to live because the animals had to survive the waves and different type of water levels and temperture changes.
Explanation:
A. the surface area of rocks decreases because of acid rain
Tsunami I think, hope this helps
Answer:
There are two things that cause landforms on the Earth's surface to change. These are human forces and forces in nature. Human Forces include Possibilism where humans change a surface for their own gain. Natural forces inclyse daily processes of precipitation, wind and land movement result in changes to landforms over a long period of time. Driving forces include erosion, volcanoes and earthquakes.
