Changing Ecosystems and Adaptations

Changing Ecosystems and Adaptations

Multiple Choice

Review:

What is a community of interacting organisms and their environment called?

• ecosystem
• life cycle
• ecosphere
• habitat

Multiple Choice

Review:

What washes away soil and plants?

• a flood

• a drought

• a wildfire

• a tornado

Multiple Choice

A wildfire can eliminate food sources for animals.

• True

• False

Multiple Select

If there were a wildfire and food sources were destroyed, animals would need...

• adapt to other sources of food

• nothing, they cannot survive a wildfire

• find a new environment to continue living

• cleanup the fire

Multiple Choice

How is an invasive species of plant harmful to an environment?

• it grows slowly

• it will not harm the environment

• it blocks sunlight and takes nutrients that native plants need

• it adapts and becomes one with the native plants

Multiple Choice

An invasive species...

• does not harm its environment

• uses up resources

• creates pollution

• looks beautiful in its new environment

Multiple Choice

A habitat is the place where an animal lives. Which animal's habitat is probably not in the desert?

• an insect
• lizard
• desert rat
• bear

Multiple Choice

How does a bird "change its environment" to meet its NEEDS?

• builds a nest
• flies around
• catches bugs
• looks for something to eat

Multiple Choice

Which organisms would be unable to escape and therefore perish from a fire?

• the deer

• the birds

• the tree

• the raccoon

Multiple Choice

After this prairie was flooded, all the animals left and the grasses died. Which organism will most likely return first?

• jackrabbit

• hawk

• coyote

• grasses

Multiple Choice

What would happen to this food chain if there was no grass?

• The grasshoppers would eat the mice, and the snakes would move away.

• The mice would have more grasshoppers to eat.

• The snake population would increase.

• The grasshopper population would decrease.

Multiple Choice

The removal of which organism would cause all other populations to decrease?

• small ocean plants

• small ocean animals

• tuna

• shark

Multiple Choice

What might happen to the rest of the food chain if there was an increase in the grasshopper population?

• The mouse population will decrease.

• The snake population will decrease.

• The hawk population will decrease.

• The grass population will decrease.

Multiple Choice

What might happen to the rest of the food chain if there was a decrease in the snake population?

• The grasshopper population will increase.

• The mouse population will decrease.

• The hawk population will decrease.

• The grass population will decrease.

Multiple Choice

A meadow has too many rabbits. What would help balance this ecosystem?

• more rain that grass needs

• fewer foxes that eat rabbits

• more foxes that eat rabbits

• more grass for the rabbits to eat

Multiple Choice

------------------- forces animals to look for new places. They may die without water.

Multiple Choice

An ecosystem is made up of ____________.

• living things

• non-living things

• living and non-living things

Multiple Choice

A squirrel makes a change to its environment when it —

• climbs a tree

• digs a hole to bury an acorn

• collects acorns

Multiple Choice

Natural disasters can also change ecosystems. What can organisms do if a disaster happens?

• Fight, Survive, Struggle

• Move, Adapt, Die

• Stay, Sleep, Survive

Multiple Choice

Changes to an environment may make it more difficult for an organism to find-

• food.

• shelter.

• water.

• all of the above