Answer:
Mantle
Explanation:
The pressure within the earth causes the magma to move around in convection currents, which causes a shift in the tectonic plates.
The U.S. has more than 87,000 dams greater than six feet high (and two million overall). While many dams continue to provide benefits such as flood control, irrigation, and water supply, for other dams the cost of maintenance or the negative effects on communities, fish, and tribes justifies their removal.
Dam owners and regulators decide whether to remove a dam by weighing many factors including: the cost of removal and the ability to replace any lost power generation against avoided long-term maintenance; safety concerns; benefits to endangered fish populations; increased recreational and commercial fishing; and restoration of cultural values of nearby tribes.
By 2020, roughly 70% of dams will be more than 50 years old, inviting us to reconsider the value to the public of long-term investments in this infrastructure.
Answer:
The type of rock can tell you if the land was formed by layers of sediment, lava, etc. Fossils can show how old they are and therefore how old the land around it is
Explanation:
Darwin is a great example. He created the theory of evolution, but because of the church ridiculing him, he couldn't come forth with his findings. Some parts of science may seem outlandish to society, and that can be very difficult to deal with.
Answer:
E.
Explanation:
This is because it is always hot and dry in the deserts, so plants and animals are <u>adapted</u> to that. Hope this helps!
