Canadian shield is composed of Precambrian rocks that cover 2.8 million square miles.
Answer:
4) The rate of species extinction is lower on the small island than on the large island.
Explanation:
The theory of island biogeography suggested that because of the size and links to the mainland. Fewer species that are not from the island will invade because the distance from the mainland is greater. The threat of extinction due to this is low. The small island also has a lower capacity for different species due to limited resources. This would mean that there are simply fewer species to go extinct.
Humans have pushed ever further with their livestock into the snow leopard's habitat. Overgrazing damages the fragile mountain grasslands, leaving less food for the wild sheep and goats that are the snow leopard's main prey.
Answer:
Much of the X-ray and UV radiation from the Sun is absorbed in the thermosphere. When the Sun is very active and emitting more high energy radiation, the thermosphere gets hotter and expands or "puffs up".
Explanation:
<span> fruit and vegetable crops. Some types are concord grapes, cranberry, sweet corn, onions, beets, potatoes. melons, apples, as well as pine, maple and dogwood trees.</span>
