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WorksheetsChanges in ecosystems
Total questions: 32
Worksheet time: 20mins
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 might be a reason an animal becomes extinct?
It is a predator.
It produces oxygen.
It adapts to its environment.
Its habitat is destroyed.
After this prairie was flooded, all the animals left and the grasses died. Which organism will most likely return first?
jackrabbit
hawk
coyote
grasses
The removal of which organism would cause all other populations to decrease?
small ocean plants
small ocean animals
tuna
shark
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.
A species that is _______ has no living members.
succession
extinct
hazardous waste
parasite
A species that is at risk of dying out is an _________ species.
endangered
parasite
competition
succession
Nonliving things that affect organisms in an ecosystem include soil, temperature, and
plants.
water.
decomposers.
parasites.
An animal that hunts and eats other animals for energy
prey
predator
decomposer
Choose the producer.
rock
tree
cow
bird
What is this a picture of?
food chain
food web
ecosystem
a pond
This an image of what?
mushrooms
decomposers
worms
bacteria
Where does the food chain START?
with consumers that eat grass
with the sun giving energy to producers
with the sun giving energy to consumers
with consumers eating other consumers
Mice and grasshoppers are examples of prey.
True
False
