Biodiversity/Human Impact

Low biodiversity means our ecosystem is sick

• Yes

• No

Why did the white ones start to disappear?

• The coal turned the white moths black

• They are actually different species and the white ones went extinct

• The white ones got a disease that the black ones didn't

• Predators ate the white ones at a higher rate.

Biodiversity, aka biological diversity, usually refers to

• the number of people on Earth

• the variety of species on Earth

• the number of animal species in a specific area

• the number of plant species in a specific area

a species that is not native to a particular region

• endemic

• exotic

• endangered

• extinct

Deforestation means...

• removing the forest

• adding to the forest

• mapping the forest

• polluting the forest

What systems are involved when humans run factories that produce smog?

• humans (bio), factories (geo), smog (atmo)

• humans (geo), factories (atmo), smog (bio)

• humans (hydro), factories (bio), smog (atmo)

• humans (bio), factories (atmo), smog (hydro)

The northern elephant seal was almost hunted to extinction in the 1800s. By the late 1890s, approximately one hundred seals were left, reducing the gene pool of the population. What will be the consequence of this reduction?

• Competition within the population will increase.

• The surviving elephant seals will be better able to adapt.

• Inbreeding will be less frequent among the remaining population.

• The elephant seals will be more vulnerable to environmental change.

Which of the following is a property of a nonrenewable resource?

• It will not run out no matter how much it is used.

• It takes tens of thousands to millions of years to replace if it is used up.

• It is recyclable after it is used through a quick and easy process.

• It releases oxygen into the atmosphere after it is used.

A ski resort installed a wind turbine  similar to those represented below to  supply some of  its energy needs. This turbine was most likely installed because wind power is:

• Renewable and does substantial  damage to the atmosphere.

• Renewable and does minimal  damage to the atmosphere.

• Nonrenewable and does substantial damage to the atmosphere.

• Nonrenewable and does minimal damage to the atmosphere

A community is concerned about the water quality of a nearby lake. Increased sedimentation in the lake is endangering the native habitat. The increased sedimentation is most likely caused by which of the following?

• trees planted along the shore of the lake

• construction of homes along the lake

• the amount of sunlight on the lake

• the amount of fish in the lake