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why is preserving biodiversity in the Galápagos islands an important worldwide concern ?

The tourist trade on the islands will decrease without biodiversity.


The world's fish markets depend mainly on fish from these islands.


Many species unique to the islands may become extinct.


The Galápagos Islands contain more different species than any comparable place on the earth.



What do the Endangered Species Act and the Convention on Biological Diversity have in common?

They are U.S. laws.


They prohibit logging and other controversial activities.


Their aim is to prevent extinctions.


The European Union and 192 nations signed them.



What is a greenhouse gas?

a gas that people can breathe safely


a gas that absorbs and re-releases heat radiated by the earth


a gas that is created by artificial means


a gas that is used in growing tropical plants to increase biodiversity



Lowering sulfur dioxide emissions would have the greatest impact upon which of the following environmental phenomena?

ozone hole


tropospheric ozone


acid rain


global climate change



Which of the following is beneficial to human health and the environment?

tropospheric ozone


acid rain


sulfur dioxide


stratospheric ozone



Which of the following contributes to global warming?

ozone hole


greenhouse gases


acid rain


tropospheric ozone



An incident in Donora, Pennsylvania, led to which of the following actions?

banning the use of CFCs


enacting air pollution laws


banning the burning of coal


conducting cost-benefit analyses



Which of the following is not a greenhouse gas?

carbon dioxide


water vapor


methane


sulfur dioxide



What is the most common method of solid waste disposal in the United States?

composting


waste-to-energy combustion


recycling


landfill



Which device is used to reduce gaseous emissions from a mobile source?

scrubber


catalytic converter


filter


column of liquid

Verified Answer :


  1. The Galápagos Islands contain more different species than any comparable place on the earth.
    2.

    Their aim is to prevent extinctions.
    3.

    a gas that absorbs and re-releases heat radiated by the earth
    4

    acid rain
    5.

    stratospheric ozone
    6

    methane
    7.

    landfill
    8.
    catalytic converter

Answer:

Q1- The correct answer is: Many species unique to the islands may become extinct. Those species won't have another place like Galápagos to develop themselves, ceasing to exist then.

Q2- The correct answer is: Their aim is to prevent extinctions. By preventing it, diversity is protected in different places.

Q3- The correct answer is: a gas that absorbs and re-releases heat radiated by the earth. Those gases are very harmful for our atmosphere when in excessively high amounts, because they increase the greenhouse effect.

Q4- The correct answer is: acid rain. Sulfur can mix with water particles on air and be condensed into rain, lowering water's pH and making it acid.

Q5- The correct answer is: stratospheric ozone. It protects us from sun radiation and also transfers heat for us.

Q6- The correct answer is: greenhouse gases. Those absorb and re-release the heat in our planet, increasing global warming effects.

Q7- The correct answer is: enacting air pollution laws. The smog caused by it harmed thousands of people, and this aspect wasn't controled until then.

Q8- The correct answer is: water vapor. It dissipates heat, and doesn't absorb and re-release it.

Q9- The correct answer is: landfill. The other means of disposal aren't as common as landfill.

Q10- The correct answer is: catalytic converter. It transforms the gaseous emissions into other products by chemical reactions.