Answer:
4.54 km of earth's crust lies within mantel.
Explanation:
- Earth's continental crust is made of igneous, metamorphic, and sedimentary rocks and is composed of SIAL elements. The continental crust is made of various layers and has a density of 2.83 g/cm, while the oceanic crust is about 2.9 g/cm.
- The ontientla crust has usual thickness of 40 km (25 miles) thick and floats or rests on upper mantel or i.e the asthenosphere. While other parts of it lies within the mantel the depth of the continental crust ranges to 100 km,
- where r/25 = 2.7 / 3.2
- r/25 = 0.82
- r= 0.82 x 25
- r= 20.46
- 25 - 20.46 is 4.54 km.
Answer: It's one, I just did a test with that question in it and I got a 100.
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Answer:
At heart, all life on Earth uses a membrane that separates the organism from its environment. ... In this regard, water is essential simply because it's a liquid at Earth-like temperatures. Because it flows, water provides an efficient way to transfer substances from a cell to the cell's environment.
Explanation:
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<span>Currently, life expectancy in north america is about 75 years for men and 80 for women.</span>
Answer:
B
Explanation:
Natural Resource is a source of energy that doesn't need any action from humans. The sun doesn't need the help of humans, therefore it is a natural resource