Chapter 4: Great Lakes - US & Canada's Freshwater Treasures

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freshwater ecosystem

Great Lakes are the world's largest

Great Lakes food chain

Insects feed on the algae and plants that grow in the Great Lakes. Tiny fish eat the insects. Larger fish feed

damaged

Invaders like the zebra mussel, sea lamprey, and alewife have all

ice

The Great Lakes were created by the movement of

1 percent

The percentage of Earth's water that is able to meet human needs is around

invasive species

The sea lamprey and zebra mussel are part of which of these Great Lakes ecosystem problems?

wetlands

an area where the soil is usually wet or covered with water

watershed

geographic area that includes all of the land and waterways that drain into a body of water

watershed

geographic area that includes all of the rivers and streams that flow into a lake or sea

5

how many lakes make up the Great Lakes.

glaciers

how were great lakes created

freshwater

made up of water that is fresh, not salty

population growth

major reason for a growing water shortage in many countries?

habitat

natural environment in which a plant or animal lives

habitat

natural environment in which a plant or animal lives is called a

invasive species

nonnative plants and animals that invade an ecosystem

non-point-solution

pollution coming from multiple points or sources

point-source solution

pollution coming from one point or source

non-point solution

pollution that does not come from a single location, but rather from many sources such as runoff from farms

food chain

series of plants and animals, each of which depends on the one below it for food

pollutants

something that pollutes, or damages, air, soil, or water

pacific salmon

species have been introduced to the Great Lakes to reduce the invasive species of alewives?

largest

true about the Great Lakes ecosystem?

runoff

water from rainfall that is not absorbed into the soil and instead flows into streams or lakes

point-source solution

water pollution from a single place, such as a discharge pipe at a plant that treats sewage

fish-eating birds

who suffered most from DDT poisoning in the Great Lakes region?

glaciers

a large mass of ice found near Earth's poles

toronto

Canadian city that sits next to the Great Lakes

non-point solution

Pollution that does not come from a single location is called

runoff

What could cause a toxic chemical in the soil to make its way into streams and lakes?

global warming

What could cause some areas to get more or less rainfall than they do today?

Great Lakes Water Quality agreement

What happened in 1972 that helped protect the Great Lakes?

ecosystem

What is a community of all the living things in an area called?

growing population

What is a major threat to China's water supply?

human development

What is the greatest threat to wetland habitats in the Great Lakes region?

PCB's & DDT decline

What was a result of the new laws to protect the Great Lakes?

chicago

Which U.S. city sits next to the Great Lakes?

asian carp

Which invasive species, though not yet in the Great Lakes, is considered a real threat to the Great Lakes,

bananas

Which item would grow best in the Tierra Caliente based on what you learned?

sediment

bits of soil left in a place by moving water

ecosystem

community of all the living things in an area and the environment in which they live

pollution

damage to the natural environment caused by harmful substances; also refers to harmful substances]

great lakes

erie, huron, superior, michigan, ontario


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