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Please Help Me !! I'm Stuck !?

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Please Help Me !! I'm Stuck !?

Postby jarret » Thu Aug 09, 2012 11:01 am

Marine science help pleaseeeeeee !

Question 1 (Multiple Choice Worth 5 points)

What is the role of krill in the Antarctic food web?

have little impact on the survival of species in Antarctica

control only the population of phytoplankton in Antarctica

only affect the population of organisms that feed on krill

have a strong impact on the survival of most organisms in Antarctica


Question 2 (Multiple Choice Worth 5 points)

Fish such as Needlefish, Tuna, Mackerel and Anchovies are in what class of fish?






Question 3 (Multiple Choice Worth 5 points)

Which of the following change in sea surface temperature best describes an El Nino event?

waters in the eastern Pacific steadily get warmer

waters in the eastern Pacific steadily get cooler

waters in the eastern Pacific show no change in temperature

Waters in the eastern Pacific fluctuate daily in temperature


Question 4 (Multiple Choice Worth 5 points)

The theory that all continents were once a super continent (Pangea) and that those continents broke apart over time best describes the theory of

plate tectonics

plate drift

continental drift

continental movement


Question 5 (Multiple Choice Worth 5 points)

On the following diagram what part of a wave is shown by letter C?






Question 6 (Multiple Choice Worth 5 points)

Estuaries are highly productive bodies of water. Which of the following best explains the reason for this high productivity?

constant changes in salinity

act as a buffer for flooding

provide a habitat for many organisms

act as a filter for nutrients


Question 7 (Multiple Choice Worth 5 points)

While conducting random water sampling tests from a nearby estuary you measure higher than normal ammonia levels. You also measure an increase in nitrogen-fixing bacteria and blue green algae in the water. Which of the following best explains why this is a good thing?

will lead to an increase in marine organisms

bacteria and blue-green algae convert ammonia into usable nitrogen

will provide evidence that the water is unhealthy

ammonia increases the productivity of an ecosystem


Question 8 (Multiple Choice Worth 5 points)

Why are most of the world's coral reefs found between the Tropic of Cancer and the Tropic of Capricorn?

warm temperatures

high nutrient levels from runoff

fluctuating salinity levels

little wave action


Question 9 (Multiple Choice Worth 5 points)

Antarctica traps 70% of the world's fresh water in its ice. Which type of ice contains only saltwater?

land ice

sea ice

continental ice

glacial ice


Question 10 (Multiple Choice Worth 5 points)

Deep water currents are caused by ______________________


Earth's rotation

animal movement

changes in salinity


Question 11 (Multiple Choice Worth 5 points)

Coral building organisms obtain some of their nutrients by filter feeding phytoplankton and nutrients from the water. Most of their nutrients come from the ____________________ which lives in the coral.






Question 12 (Multiple Choice Worth 5 points)

Birds that can fly usually have hollow, lightweight bones. Penguins, a species of flightless bird, have heavy and dense bones. Why is this an advantage?

they are less likely to be injured on the ice

their bones help them retain body heat in the cold temperatures

they are more efficient hunters in the water due to heavier bones

they are more efficient hunters on land due to heavier bones


Question 13 (Multiple Choice Worth 5 points)

Emperor penguins lay their eggs during the coldes
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Please Help Me !! I'm Stuck !?

Postby conor » Thu Aug 09, 2012 11:11 am

Just Google the main statements.
I did #1

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Joined: Thu Mar 31, 2011 3:58 pm

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