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Biology > Endangered Ecosystem > Flashcards

Endangered Ecosystem Flashcards

1
Q

Excess logging was carried out in a tropical forest.

What is the effect of this activity on the environment?

A

> Soil erosion

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2
Q

What is the effect of thermal pollution?

A

> Rapid growth of algae

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3
Q

▪️Biochemical oxygen demand(BOD) increases
▪️Algal bloom
▪️Light intensity is reduced

What is the phenomenon?

A

> Eutrophication
(Water resources are rich in dissolved nutrients that stimulate the growth of algae, resulting in the decreasing of dissolved oxygen)

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4
Q

Which way can reduce pollution?

A

> Use energy saving bulbs

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5
Q

What is the substance that causes the depletion of ozone layer?

A

> Chlorine

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6
Q

What is the main gas that causes greenhouse effect?

A

> Carbon dioxide

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7
Q

▪️Melting of ice at the poles
▪️Increase in sea level

What is the environmental phenomenon?

A

> Global warming

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8
Q

Which activity does not reduce sediment?

A

> Spray the aquatic plant with herbicides

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Biology (9 decks)

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