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WorksheetsChanges in Ecosystems: Lesson 1
Total questions: 24
Worksheet time: 12mins
To avoid very cold temperatures when the seasons change, some animals
migrate
use camouflage
use mimicry
Which of the following is NOT likely to be found in a food chain of a woodland forest?
A rabbit eats grass
A hawk eats a rabbit
A deer eats a fox
A _________________ is made up of overlapping food chains in an ecosystem.
food pyramid
hunting circle
food web
Which is one way humans endanger animals?
Building national parks
clearing rain forests
passing laws to control hunting.
Five hundred field mice live in a meadow. There is only enough food to feed 350 of them. How many field mice must move or they will die?
50
150
250
Which could happen if people introduced a new animal into an environment?
The environment will not be affected.
Other animals will create pollution
The animal uses up resources
Which is NOT a reason that an organism can become endangered?
People have destroyed its environment
The organism's climate has changed
The organism migrates in the winter.
True or False Animals survive better in their own environments. When changes happen to their own environment it can hurt them.
True
False
Prairie dogs keep the grass short on the prairie. True or False
True
False
Where does the first organism in most food chains get their energy?
land
water
sun
An individual organism's response to change in its environment is called
organism
accomodation
food web
food chain
Check all that apply.Park Rangers take care of the following.
animals
plants
oceans
people
A _________________ is made up of overlapping food chains in an ecosystem
food web
food pyramid
predator map
hunting circle
El Nino causes different weather events such as heavy rains, floods, and droughts. True or False
True
False
What is a native species?
A species that just migrated to a new place.
A species that has been somewhere a long time.
A species that keeps traveling to different environments
This person checks to make sure the trees and animals in the park are healthy and that people are safe.
zoologist
marine biologist
park ranger
When animals move from one place to another they
migrate
ecosystem
food web
pollution
This is what happens when harmful materials get into water, air, or land
accomodation
food web
pollution
A model of the order in which living things get the food they need
food web
organism
ecosystem
food chain
All the members of one kind or type of organism in an ecosystem
population
migrate
food web
The living and nonliving things that interact in an environment
accomodation
ecosystem
migrate
The overlapping food chains in an ecosystem
food web
organism
population
Any plant or living thing is known as an
organism
population
pollution
accommodation
What is an example of a large change to an ecosystem?
rabbit eating a piece of grass
small plants grow after people cut down trees
a forest fire
