WorksheetsModified Changes to an Ecosystem
Total questions: 19
Worksheet time: 16mins
How does a bird "change its environment" to meet its NEEDS?
builds a nest
flies around
catches bugs
An ______________ is a system made up of all the biotic and abiotic factors in an area and all the interactions among them.
ecosystem
habitat
population
Why would humans cut down forests?
to build roads
to build buildings
to build factorys
all of the above
Which of the following would have a NEGATIVE impact on an ecosystem
constructing highways
planting trees
recycling paper
Which is NOT an example of a natural environmental change?
a beaver dam
a hurricane
a housing development
When the last member of a species dies, the species becomes
extinct
endangered
dead
In a pond ecosystem, what would happen to frogs if the insect population decreased?
There would be more frogs in the pond
There would be more insects in the pond
There would be less frogs in the pond
A squirrel makes a change to its environment when it —
climbs a tree
digs a hole to bury an acorn
collects acorns
What is overpopulation?
all living things that belong to the same group and live in the same area
having too many people or organisms in a particular area
the place where an organism lives
Natural disasters can also change ecosystems. What can organisms do if a disaster happens?
Fight, Survive, Struggle
Move, Adapt, Die
Stay, Sleep, Survive
Changes to an environment may make it more difficult for an organism to find-
food.
shelter.
water.
all of the above
Which picture below is mostly positive???
If humans cleared a forest to build homes, we would expect _____________.
fewer tree-dwelling animals
increased insect populations
more development of soil
A NATURAL change to an ecosystem occurs when
a severe drought causes plants to die.
trees are cut down to make paper.
roads are built through a forest.
Which of the following is a natural disaster that could wipe out an ecosystem?
a sunny day
a rain storm
a forest fire
In what ways can humans change an ecosystem?
by making a region flood
by creating hurricanes
by adding to the amount of pollution in an ecosystem
When animals graze so much that the vegetation is damaged
fertilize
overpopulation
overgrazing
All negative impacts on an ecosystem are caused by humans.
true
false
