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mestny [16]
3 years ago
11

Identify two potential improvements to the opal extraction process and explain how these improvements could minimize harm to the

environment.
Physics
1 answer:
Orlov [11]3 years ago
7 0

Answer

• Improving the environmental performances

• Developing Green Mining technology

Explanation

The effect to the environment caused by opal mining are; impact on soils and geology, clearing of native vegetation disrupting flora and fauna, change in land use and effects of air quality.

Opal mining is currently examining environmental impacts and adopting measures that mitigate the impacts making the process less destructive to the environment.

With the current commitment to sustainability, opal companies are investing funds for Green Mining as a positive way to impact the environment before and after mining.


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What type of circuit has little or no resistance?
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Explanation:

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A backpacker walks for 3 days in the mountains and covers 16 km. How fast was he walking in km/hr?
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Answer:

0.22 km/h

Explanation:

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16/72 = 0.222222222

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What percentage of a lower trophic level's energy flows to the next higher trophic level? A. 1% b. 10% c. 50% d. 100% Please sel
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2 years ago
The differential equation below models the temperature of an 88°C cup of coffee in a 24°C room, where it is known that the coffe
densk [106]

Answer:

y = 24+64\cdot e^{-150\cdot t}

Explanation:

Let solve the differential equation by separating corresponding variables:

\int\limits^t_0\, dt = -\frac{1}{150} \int\limits^y_{y_{o}} \frac{dy}{y-24}

The solution of this equation is:

t = -\frac{1}{150}\cdot (\ln|y-24|-\ln |y_{o}-24|)

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y = 24+64\cdot e^{-150\cdot t}

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