Ecostudent Challenge

Great white sharks can detect a single drop of blood in how many gallons of water?

• 25 gallons

• 1 gallon

True or False- Manta rays are harmless to humans?

• True- unlike stingrays, manta rays don’t have barbs or stingers at the end of their tails, rendering them harmless to swimmers and divers.

• False, they are have a poisonous stinger at the end of their tail.

Where does “runoff” come from that reaches the ocean and kills marine life?

• the sky

• Farming, sewage, chemical use.

What is the area of the ocean that is depleted of oxygen and causes marine animals to suffocate?

• 1. A dead zone

• a healthy area of water

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The ocean ecosystem has a high sustainability because of

• strong, persistent currents

• predator/prey relationships

• green plants growing on the bottom

• the large variety of different organisms

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The community of a pond is made up of all the...

• abiotic factors in the water

• resources organisms need

• habitats in and around the wate

• populations of fish, insects, and other living organisms

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Which of the following contributes most to promoting sustainability in an ecosystem?

• Lack of decomposers

• A balanced water table

• Variety of organisms

• A narrow temperature range

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Imagine Pearl and Jeremy are on a thrilling underwater adventure, exploring the vast ocean ecosystem. They discover its high sustainability is due to -

• strong, persistent currents.

• predator/prey relationships.

• green plants growing on the bottom.

• the large variety of different organisms.

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What influences if an ecosystem is sustainable?

• Ecosystems with many plants

• Ecosystems with many fish

• Ecosystems with more biodiversity of species

• Ecosystems with less biodiversity of species

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An _______ is a community of living and non-living components in an environment.

• Environment

• Ecosystem

• Population

• Community