NEW
Font size
WorksheetsChanges in Ecosystems
Total questions: 15
Worksheet time: 8mins
Why do chipmunks survive in the Great Smoky Mountains?
Their parents take care of them.
The park rangers take care of them.
They get lots of sunshine.
Their needs are met.
In a balanced ecosystem
Only plants survive.
Animals are in charge.
No animals or plants drive out other animals and plants.
There are no predators.
If a meadow has too many rabbits, to help it become balanced...
needs more carrots
needs more foxes that eat rabbits
needs more bunny hatches
needs more Elmer Fudd
Oxygen, made by grass, that animals use is a way organisms interactions help
animals become vegetarian
create more carbon dioxide
decrease the number of animals
balance the ecosystem
How would an ecosystem change if the rabbits, that were the main prey for foxes, became sick or died?
time for more foxes
ecosystem would be destroyed
number of foxes would decrease
it would be balanced
A parasite
hurts itself
hurts one organism and helps another
is two sites
is helpful to everyone
Succession is
quick change from a natural disaster
to be able to win
ecosystems that have no change
process of gradual change from one community of organisms to another
What can cause an ecosystem to change quickly?
Planting trees
Introducing new animals
An earthquake
The water cycle
If an ecosystem changes from being rainy to dry...
plants can change
animals can change
plants and animals can change
plants and animals won't change
What can scientist tell from a fish fossil found in the desert?
someone lost their fish
the desert was once a sea or lake.
it is fake
fish once had legs to travel
What might be a reason an animal becomes extinct?
It is a predator.
It produces oxygen.
It adapts to its environment.
Its habitat is destroyed.
How are a hawk and an owl able to succeed, even though they compete for food?
The hawk eats the owl.
The owl changes its diet.
One animal moves to a different habitat
One hunts at night and the other hunts during the daytime.
What is one way people can disturb the balance of ecosystems?
planting trees
riding bicycles
breathing air
building houses
How can damage from strip mines be repaired?
Erosion can fill the hole.
Mining companies can replace the soil.
Rain can wash the rock away into rivers
Mining companies can go mine in another place.
Why did the United States establish national parks?
to make money for the national government.
to provide Americans with great vacation spots
to preserve nature's beauty and habitats of plant and animals
to give American a chance to see things they've never seen before.
