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matrenka [14]
3 years ago
12

Acid drainage does not normally occur in areas before mines are built but tends to happen after the mine has been in operation f

or many years. What causes acid drainage?
A. Concentrated acids used to dissolve metals from the rock are picked up in rainwater.
B. Mining exposes unweathered rock surfaces that react with water and the atmosphere to generate acids.
C. The acid is already present in trapped underground pockets and is released by mining equipment.
D. Abandoned mining equipment leaks acids from batteries.
Biology
1 answer:
Nitella [24]3 years ago
7 0

Mining exposes unweathered rock surfaces that react with water and the atmosphere to generate acids.

The large amount of freshly exposed rock provides the sulfur to generate sulfuric acid

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Proteins act as what in cells to control reactions
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The answer is; catalyst

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5 0
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melamori03 [73]

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Food chain is a linear relationship between organisms that depicts the flow of energy from one organism to another. In a food chain, organisms are arranged in trophic levels where arrows pointing to the right direction (➡) are used to show that the organim the arrow is pointing to eats the organism behind it.

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2 years ago
What formulation of zinc has been found somewhat effective in treating the symptoms of the common cold?​?
amm1812
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8 0
3 years ago
I do this work negative​
skad [1K]

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what?

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anzhelika [568]

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