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