Period 1- Great Lakes

Question 1

How did the Great Lakes form?

Answer 1

ice retreated, left holes, then melted

Question 2

What is an ecosystem?

Answer 2

all living things in an area

Question 3

The Great Lakes make up the world’s _____________ freshwater ecosystem?

Answer 3

largest

Question 4

How many Great Lakes are there?

Answer 4

5

Question 5

What two countries share the great lakes?

Answer 5

USA and Canada

Question 6

A geographic area that includes all of the land & waterways that drain into a body of water is______

Answer 6

watershed

Question 7

the feeding relationships within an ecosystem, each living thing provides food energy to others

Answer 7

food web

Question 8

A _____________________ is a series of plants and animals, each depends on the next for food.

Answer 8

food chain

Question 9

What is damage to the natural environment caused by harmful substances?

Answer 9

pollution

Question 10

Pollution from a single place is called _______

Answer 10

point source pollution

Question 11

Scientists estimate there are more than _______ invasive species in the Great Lakes today.

Answer 11

185

Question 12

Pollution that does not come from one source?

Answer 12

non point source pollution

Question 13

plants and animals that are nonnative to an ecosystem are called ______

Answer 13

invasive species

Question 14

A _______________is the natural environment in which a plant or an animal lives.

Answer 14

habitat

Question 15

What percent of Earth’s water is suitable for human use?

Answer 15

1