Marine Science Review

How much of Earth's oxygen is generated by marine organisms?

• 25%

• 50%

• 75%

• 90%

• 95%

A marine biologist observes that mako sharks, sardines, and salmon leap out of the water. An example of induction from these observations is:

• Only some fishes can leap out of the water.

• All fishes leap out of the water.

• Fishes leap out of the water to escape from predators.

• Flatfishes can leap out of the water because they live on the bottom.

• Leaping out of the water is often used in feeding.

8 How much of the Earth's surface is covered by the world oceans?

• 80%

• 71%

• 65%

• Option 4

• 78%

Which of the following is not true of oceanic crust?

• It is thinner than continental crust.

• It is denser than continental crust.

• It is geologically younger in most places than continental crust.

• It lies below sea level.

• It consists mostly of granite.

Tags

NGSS.HS-ESS1-5

The light zone where most photosynthesis occurs is the (a)   zone

• euphotic

• dysphotic

• aphotic

Tags

NGSS.MS-LS1-6

What is responsible for the oxygen minimum zone (OMZ)? Choose all that apply.

• Increased photosynthesis in this zone

• Decreased photosynthesis in this zone

• More organisms respiring

• Less organisms respiring

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Which of the following is evidence of plate tectonics?

• magnetic anomalies/paleomagnetic evidence

• sea-floor spreading

• existence of mid-ocean ridges

• magnetic anomalies, seafloor spreading, and existence of sea-floor mid-ocean ridges

• sea floor spreading and the existence of mid-ocean ridges only

Tags

NGSS.MS-ESS2-3

14 The outer edge of the continental margin is the:

• shelf break.

• continental slope.

• continental rise.

• edge of the abyssal plain.

• continental edge.

Why are too many nutrients (like nitrates and phosphates) bad for our waters?

• Nutrients decrease the pH of the water, causing it to become increasingly acidic

• Nutrients change the salinity of the water

• Wetlands filter out runoff that may contain nutrients

• Nutrients in the water cause too much algae growth, which decrease the level of oxygen in the water

Which glass contains water with high turbidity?

• Glass 1

• Glass 2

Tags

NGSS.MS-PS1-2