THIS IS With Host... Your 100 200 300 400 500 A- Balanced Ecosystems B- Vocab C- Natural Disasters D- Hosts and ‘sites E- Teacher’s Choice.

THIS

IS

With

Host...

Your

100 100 100 100 100

200 200 200 200 200

300 300 300 300 300

400 400 400 400 400

500 500 500 500 500

A- Balanced

Ecosystems

B-Vocab

C- Natural

Disasters

D-Hosts and

‘sites

E- Teacher’s

Choice

Why do prairie dogs survive in the Great Plains?

A- They have driven out all the other prairie dogs.

B- Their needs are met by that environment.

C- Humans feed them.

D- Humans have moved to the prairie.A 100

A 100

Why do prairie dogs survive in the Great Plains?

B- Their needs are met by that environment.

What describes a balanced ecosystem?

A- There is enough water for people.

B- One type of animal and plant depend on each other.

C- No animal or plant drives out other animals or plants.

A 200

A 200

What describes a balanced ecosystem?

C- No animal or plant drives out other animals or plants.

A meadow forest has too many squirrels. What would help balance

this ecosystem?

A- more rain that grass needs

B- more owls that eat squirrels

C- fewer owls that eat squirrels

D- more acorns for squirrels to eat

A 300

A 300

A meadow forest has too many squirrels. What would help balance

this ecosystem?

B- more owls that eat squirrels

How do these organisms’ interactions help balance their ecosystem?

A- Ants make homes in grass.

B- Grass and ants both need oxygen.

C- Grass makes oxygen, and animals use it.

A 400

A 400

How do these organisms’ interactions help balance their ecosystem?

C- Grass makes oxygen, and animals use it.

How might a forest fire affect the balance of a forest ecosystem?

A- It destroys sources of food and shelter for living things.

B- It creates sources of food.

A 500

A 500

How might a forest fire affect the balance of a forest ecosystem?

A- It destroys sources of food and shelter for living things.

What happens when two or more species in an ecosystem must use the

same limited resource?

A- succession

B- parasites

C- competition

D- extinction

B 100

B 100

What happens when two or more species in an ecosystem must use the

same limited resource?

C- competition

What are organisms that live on or in another organism, helping

themselves but hurting the other organism?

A- host

B- parasite

C- endangered

D- producer

B 200

B 200

What are organisms that live on or in another organism, helping

themselves but hurting the other organism?

B- parasite

What is a gradual change from one community of organisms to another?

A – natural disaster

B- hazardous waste

C- competition

D- succession

B 300

B 300

What is a gradual change from one community of organisms to another?

D- succession

What are substances that are very harmful to humans and other

organisms?

A- hazardous wastes

B- hosts

C- parasites

D- natural disastersB 400

B 400

What are substances that are very harmful to humans and other

organisms?

A- hazardous wastes

What is an organism that is harmed by a parasite?

A- endangered species

B- extinct species

C- host

D- parasite

B 500

B 500

What is an organism that is harmed by a parasite?

C- host

How would an ecosystem change if the fish that were a main source of prey for

sharks became sick and died?

A: The number of sharks would decrease.

B: The number of sharks would increase.

C- The sharks would find new prey.C 100

C 100

How would an ecosystem change if the fish that were a main source of prey for

sharks became sick and died?

A: The number of sharks would decrease.

Which would cause an ecosystem to change quickly?

A- a gradual climate change

B- a lake becoming a marsh

C- a lake drying up

D- an earthquake

C 200

C 200

Which would cause an ecosystem to change quickly?

D- an earthquake

C 300

What could scientists tell from a fish fossil in a prairie?

A- The fish is extinct.

B- Fish one had legs to travel.

C- Fish once lived on the prairie.

D- The prairie was once a sea or lake.

C 300

What could scientists tell from a fish fossil in a prairie?

D- The prairie was once a sea or lake.

DAILY DOUBLE

C 400

DAILY DOUBLE

What is one way a flood might affect an ecosystem?

A- the grass will become dry

B- the grass may die

C- the grass will grow

C 400

C 400

What is one way a flood might affect an ecosystem?

B- the grass may die

C 500

If there was a flood, which population might increase?

A- squirrels

B- prairie dogs

C- chipmunks

D- fish

C 500

If there was a flood, which population might increase?

D- fish

What impact does a parasite have in an ecosystem??

A- helps the entire ecosystem

B- hurts one organism and helps another

C- helps both the host organism and the parasite

D- hurts the host and the parasiteD 100

D 100

What impact does a parasite have in an ecosystem??

B- hurts one organism and helps another

D 200

An insect called the balsam wooly adelgid is a parasite that kills Fraser

fir trees. As the insect feeds it…

A- helps the tree.

B- harms the tree.

C- competes for food.

D 200

An insect called the balsam wooly adelgid is a parasite that kills Fraser

fir trees. As the insect feeds it…

B- harms the tree.

If a host dies, the parasite…

A- continues to thrive.

B- might look for another host.

C- competes with other hosts.

D 300

D 300

If a host dies, the parasite…

B- might look for another host.

Which organism benefits from the parasite-host relationship?

A- both

B- neither

C- parasite

D- host

D 400

D 400

Which organism benefits from the parasite-host relationship?

C- parasite

What could help an organism that is living with the parasite.

A- Removal of the parasite.

B- Nothing can help it.

C- Adding more parasites.

D- Finding a new host.

D 500

D 500

What could help an organism that is living with the parasite.

A- Removal of the parasite.

What does this illustration show?

A- parasites and hosts

B- competition

C- successionE 100

E 100

What does this illustration show?

C- succession

What might be a reason an animal becomes extinct?

A- Its habitat has been destroyed.

B- It is a predator.

C- It produces oxygen.

D- It adapted to its environment.

E 200

E 200

What might be a reason an animal becomes extinct?

A- Its habitat has been destroyed.

How can damage from strip mines be repaired?

A- Erosion can fill the hole.

B- Mining companies can replace the soil.

C- Rain can wash the rocks away into rivers.

E 300

E 300

How can damage from strip mines be repaired?

B- Mining companies can replace the soil.

Why did the United States establish national parks?

A- to make money for the national government

B- to give Americans a chance to see things they’ve never seen before

C- to preserve nature’s beauty and habitats of plants and animals

E 400

E 400

Why did the United States establish national parks?

C- to preserve nature’s beauty and habitats of plants and animals

When does succession occur?

A- All the time

B- When an environment changes

C- When competition occurs

D- When there is a parasite

E 500

E 500

When does succession occur?

B- When an environment changes