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Hydroelectricity can be an environmentally friendly source of energy, especially compared to fossil fuels. But it also comes with a risk of mercury poisoning.

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Mussels filter food out of the water with their gills. That makes them a great tool for testing water quality.

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What do gray wolves, elephants, and parrotfish have in common? They're all keystone species, which means they have an especially large impact on their habitat. (5:07 min.)

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Every now and then, a human foot washes up on the shore, usually wearing a running shoe. But where did it come from, and where’s the rest of the body.

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Have you ever looked at a lake and wondered why there was a thick layer of green scum on the water? Chances are, you were looking at an eutrophic lake.

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CurioCity resources which align with Quebec's Secondary IV Environmental Science and Technology content area: The Living World.

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CurioCity resources which align with Quebec's Secondary IV Science and Technology content area: The Living World.

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with Starting Points

Some species have a bigger impact on their ecosystem than others. These keystone species include predators, prey, plants, and ecosystem engineers.

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CurioCity resources which align with the Yukon Grade 9 Science Curriculum Content area on the cycling of matter and energy on Earth.

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CurioCity resources which align with British Columbia's Science 9 content area on the cycling of matter and energy on Earth.

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