Alice Marine Science A Level

As you move from estuaries to open ocean, salinity will

• increase.

• decrease.

• stay the same.

The concentration of dissolved gases in the water, particularly oxygen and carbon dioxide, are affected by the presence of organisms. This is due to (two answers)

• cellular respiration from producers.

• photosynthesis from consumers.

• photosynthesis from producers.

• cellular respiration from producers and consumers.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following are the two greatest long-term threats to coral reefs?

• ocean acidification and overfishing

• damage by divers and predation

• climate change and acidification

• erosion and sea-level rise

• climate change and predation

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Although they only occupy 0.2% of the ocean floor, coral reefs provide many benefits. Which of the following is not one of these?

• They provide significant free oxygen.

• They serve as natural barriers.

• They protect coastlines from erosion.

• They provide habitats for one-quarter of all marine organisms.

• They provide one-tenth of the global fish catch.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

NGSS.MS-LS2-5

If you find a new species of algae floating on the surface of a coastal zone, you would likely consider it a type of ____.

• benthos

• zooplankton

• nekton

• phytoplankton

• ultraplankton

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-2

NGSS.MS-LS2-3

Oysters, sea stars, and lobsters would be considered what type of organism?

• phytoplankton

• zooplankton

• nekton

• benthos

• decomposers

Strongly swimming consumers are most likely to be ____.

• phytoplankton

• zooplankton

• nekton

• benthos

• decomposers

What prevents coral reefs from surviving below the euphotic zone?

• high water density

• high pressure

• saline water

• inadequate sunlight

• damage from storms

Which of the following is not part of the saltwater or marine aquatic life zones?

• oceans

• estuaries

• inland wetlands

• coastal wetlands

• mangrove forests

Which of the following is a major cause of increasing ocean acidification?

• eutrophication

• construction of dams and levees

• rising sea level

• rising levels of CO₂

• decreasing dissolved oxygen

Tags

NGSS.HS-ESS2-2