
Ecosystems and Adaptations
Presentation
•
Science
•
3rd Grade
•
Hard
Joseph Anderson
FREE Resource
6 Slides • 20 Questions
1
Changing Ecosystems and Adaptations
2
3
4
5
6
Multiple Choice
Review:
What is a community of interacting organisms and their environment called?
7
8
Multiple Choice
Review:
What washes away soil and plants?
a flood
a drought
a wildfire
a tornado
9
Multiple Choice
A wildfire can eliminate food sources for animals.
True
False
10
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
11
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
12
Multiple Choice
An invasive species...
does not harm its environment
uses up resources
creates pollution
looks beautiful in its new environment
13
Multiple Choice
14
Multiple Choice
15
Multiple Choice
Which organisms would be unable to escape and therefore perish from a fire?
the deer
the birds
the tree
the raccoon
16
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
17
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.
18
Multiple Choice
The removal of which organism would cause all other populations to decrease?
small ocean plants
small ocean animals
tuna
shark
19
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.
20
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.
21
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
22
Multiple Choice
------------------- forces animals to look for new places. They may die without water.
23
Multiple Choice
An ecosystem is made up of ____________.
living things
non-living things
living and non-living things
24
Multiple Choice
A squirrel makes a change to its environment when it —
climbs a tree
digs a hole to bury an acorn
collects acorns
25
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
26
Multiple Choice
Changes to an environment may make it more difficult for an organism to find-
food.
shelter.
water.
all of the above
Changing Ecosystems and Adaptations
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