Human Impacts Review

Coral bleaching is:

• an overgrowth of algae

• when coral polyps reject the zooxanthellae living inside

• a disease that attacks coral

• how marine biologists clean up the coral

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NGSS.MS-LS1-5

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Eutrophication is caused by

• excess nutrients building up in the water.

• industrial point-source pollution.

• unlined landfills and septic tanks.

• wastewater from homes mixing with drinking water.

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NGSS.MS-ESS3-3

NGSS.MS-ESS3-4

NGSS.MS-LS2-3

NGSS.MS-LS2-4

How does eutrophication cause the death of aquatic organisms

• the build up of carbon dioxide in the water

• the lack of nitrogen in the water

• the lack of carbon dioxide in the water

• the lack of oxygen in the water

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NGSS.MS-LS2-4

An ecosystem that rapidly returns to its original state after a disturbance is

• resistant
• vigorous
• resilient
• stable

The more carbon dioxide that is in the atmosphere ____________________.

• the higher the temperature of the ocean and atmosphere

• the more acidic the ocean is

• the more glaciers melt causing the oceans to rise

• all of these

How does overfishing (overexploitation) cause ecosystems to become fragile?

• It lowers the biodiversity by killing out existing organisms.

• It causes all organisms in the area to become extinct.

• It adds pollution to the area.

• all of these

This causes an ecosystem to become fragile at it often lowers the biodiversity by killing out existing organisms.

• invasive species

• increase in population of producers

• burning fossil fuels

• lowering the temperature of the ocean

Which of the following cause an area to become more fragile by decreasing the number and variety of species in an area? (select all that apply)

• pollution

• invasive species

• habitat loss

• overfishing

Invasive species (non-native species), algal blooms and disease are classified as ______________.

• physical disturbances

• biological disturbances

• biological species

• all of these

___ are the first organisms to colonize an area and begin the process of ecological succession.

• foundational organisms

• introductory organisms

• primary organisms

• pioneer species