The Answer Is A. Hope This Helps ;P
Landslide is a general term referring to all types of surface movement, like avalanches involving the mass movement downhill of soil, rock, or snow under the action of gravity. These can be dangerous to human life.
Mudslides are caused unusually heavy rain or sudden thaw. they consist of mostly mud and water with fragments of rock and other debris. They're capable of moving house off of their foundations and can bury a place within minutes.
The answer is A, Viruses
Viruses cannot reproduce on their own , so they have to inject their DNA or RNA into the nucleuus of a cell. By doing this, the virus will take over that cells and within times, that cells will pop up and producing more viruses.
This reproduced virus will repeat the same process until our immune systems stop them
In an ecosystem the component energy is not recycled
Answer:
Beavers and their dams play an important role in nature. Because of the dramatic effects their dams have on surrounding ecosystems, these mammals are considered a keystone species. By constructing dams they create wetlands -- lush environments which attract fish, ducks, frogs and other creatures.
Explanation:
