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Shkiper50 [21]
2 years ago
7

Extracting aluminum from ore takes 20 times more _____ than obtaining it from _____ sources

Biology
1 answer:
mamaluj [8]2 years ago
3 0
Extracting aluminum from bauxite ore requires 20 times more energy than extracting it from aluminum from recycled sources so therefore that is a good reason to promote its recycling starting with pop and beer cans which are things that most of us use.
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The population density of frogs in a portion of a pond is 12 frogs per square meter. The size of the entire pond is 370 square m
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Given: The population density of frogs in a portion of a pond is 12 frogs per square meter. The size of the entire pond is 370 square meters.

To find: The total population size of the frogs in the pond.

Method: Using unitary method of proportions

Solution:

Let p be the density of the frogs present per square meter.

Let A denote the total area of the pond.

∴ p = 12 frogs/m² and A = 370 m²

The total number of frogs in the pond is given by,

p \times A = 12 \times 370 = 4440

Therefore, there are 4440 frogs in the pond.

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