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alisha [4.7K]
4 years ago
14

Which of the following are possible causes of mass extinctions that scientists have identified

Physics
1 answer:
Alecsey [184]4 years ago
4 0

Answer:

over harvesting, pollution, introduction of invasive species such as new predators and food competitors

Explanation:

The main cause of mass extinction is Humans cause extinction of a species through overharvesting. The second main  cause is pollution ., introduction of invasive species such as new predators and food competitors, habitat destruction, overhunting and other influences. Another very important cause of mass extinction is the unsustainable human population growth.

The five mass extinction events are

Ordovician Mass Extinction

Devonian Mass Extinction

 Permian Mass Extinction

Triassic -Jurassic Mass Extinction

and Cretaceous -Tertiary (or the K-T) Mass Extinction.

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Heat required to melt 0.05 kg of aluminum is 28.7 kJ.

<h3>What is the energy required to melt 0.05 kg of aluminum?</h3>

The heat energy required to melt 0.05 kg of aluminum is obtained from the heat capacity of aluminum and the melting point of aluminum.

The formula to be used is given below:

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Assuming the aluminum sheet was at room temperature initially.;

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Melting point of aluminum = 660.3 °C

Temperature difference = (660.3 - 25) = 635.3 903

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Heat required = 0.05 * 903 * 635.3

Heat required = 28.7 kJ

In conclusion, the heat required is obtained from the heat change aluminum and the mass of the aluminum melted.

Learn more about heat capacity at: brainly.com/question/21406849

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an object weighing 15 newtons is lifted from the ground to a height of 0.22 meter what is the increase in the object's gravitati
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Answer:

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Explanation:

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