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Ainat [17]
3 years ago
7

Explain how a change in the environment could cause a population crash

Chemistry
1 answer:
Novay_Z [31]3 years ago
8 0

Explanation:

Population is hugely dependent on the environment and it's factors. The physical, chemical and biological components of the environment plays vital roles in the sustenance of all life on earth.

A change in the environment can lead to terrifying consequences. Let's examine some of the changes:

  • Climate change can lead to flooding of biological habitats and where people typically reside. This can lead to death and loss of life.
  • Drought can lead to decline in food production. During a drought, a place receives little to no rainfall and the land is not fit for agricultural practices. This will eventually lead to famine.
  • Pollution: it is the introduction of harmful substances into the environment. Pollution is harmful to the population.
  • Geological hazards; earthquakes, volcanic eruptions,mass wasting and so on can lead  to a crash in population.
  • Wildfires, tornadoes, dust bowls e.t.c are changes in the environment that can cause severe consequences on the population.

Learn more:

Environment brainly.com/question/3906722

#learnwithBrainly

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If the black dot is sound, which direction is the sound in the picture moving? *
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Purification of copper can be achieved by electrorefining copper from an impure copper anode onto a pure copper cathode in an el
Likurg_2 [28]

Answer: 281 hours

Explanation:-

1 electron carry charge=1.6\times 10^{-19}C

1 mole of electrons contain=6.023\times 10^{23} electrons

Thus  1 mole of electrons carry charge=\frac{1.6\times 10^{-19}}{1}\times 6.023\times 10^{23}=96500C

Cu^{2+}+2e^-\rightarrow Cu

96500\times 2=193000Coloumb of electricity deposits 1 mole or 63.5 g of copper

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11.5 kg of copper is deposited by=\frac{193000}{0.0635}\times 11.5=34952756 Coloumb

Q=I\times t

where Q= quantity of electricity in coloumbs  = 34952756 C

I = current in amperes = 34.5 A

t= time in seconds = ?

34952756 C=34.5A\times t

t=1013123sec=281hours

Thus it will take 281 hours to plate 11.5 kg of copper onto the cathode if the current passed through the cell is held constant at 34.5 A.

8 0
3 years ago
g Ethanol boils at 78.4 °C with \DeltaΔHvap = 38.6 kJ/mol. A 0.200-mol sample of ethanol is heated from some colder temperature
andrezito [222]

Answer:

8.77 kilo Joules  will be the total amount of heat required for both the heating and the vaporizing.

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