They could adapt to live together so that for example one starts eating only seaweed while the other starts eating only organic matter so they don't compete for food. They could also adapt like when squirrels are separated into those who eat on trees and those who eat on the ground. The 2 urchin types could split into those who eat of the ground and those that eat what floats and drifts.
Women's access to education is still low in Sudan because the country's developing factors need to sustain.
Thee correct answer is - a deep ocean current.
The ocean's global conveyor belt is represented with the movement of the water in the deep ocean currents. These deep currents of cold water never stop, and they move constantly across the globe. They are getting their properties in close proximity to the poles, and move the cold and rich in nutrients water from the Arctic and Antarctic Circles towards the low latitudes. The conveyor belt is very important in the climate patters on the planet, but it is also crucial for the existence of the marine ecosystems.
Lowering a streams base level will cause the stream to down cut.
Answer:
The Yukon, Northwest Territories, Nunavut, Alaska.
Explanation:
Nunavut, Alaska, Northwest Territory, and the Yukon territories.
alaska , yukon territory , northwest territory , nunavut (which is mostly tundra but most of canada is subarctic )