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Ecosystems And Cycles
Test Description: Review
Instructions: Answer all questions to get your test result.
1) How do humans get the carbon they need?
A
by exercising
B
through respiration
C
through transpiration
D
by eating things that have carbon
2) Carbon is the building block of________
A
matter
B
life
C
energy
D
cells
3) How do humans get rid of extra carbon?
A
by sweating
B
through respiration
C
by exercising
D
through transpiration
4) Biotic factors are_____
A
LIVING
B
NONLIVING
5) Why are there no plants deep in the ocean?
A
because the animals eat them all
B
because the water is too salty to support the life of plants
C
because sunlight does not reach that deep so plants can't make their own food
D
because there aren't enough nutrients for plants to make their own food
6) In which biome would you find trees that go dormant in the winter?
A
tundra
B
deciduous forest
C
tropical rainforest
D
taiga
7) If all the plants in an ecosystem died, what would happen to the consumers?
A
they would move to another area
B
they would adapt and eat other things
C
they would call 911
D
they would eventually all die
8) Since plants can't use the nitrogen that's in the air, what helps change the nitrogen into a usable form?
A
ammonia and nitrates
B
bacteria and lightning
C
water and sunlight
D
photosynthesis and respiration
9) Which level of the energy pyramid has the most energy?
A
the producers
B
the secondary consumers
C
the tertiary consumers
D
the primary consumers
10) Which of the following is an important ABIOTIC factor of the desert?
A
jackrabbits
B
cacti
C
scorpions
D
sandy soil
11) Which is an important ABIOTIC factor of the tundra?
A
permafrost
B
polar bears
C
moss and lichen
D
snowy owls
12) Why are evergreen trees able to survive the environment of the taiga?
A
they grow close together and have needle like leaves to conserve moisture
B
they know that nothing will eat them in the winter
C
they go dormant until it is spring
D
they lose their leaves and sleep until spring
13) How are humans upsetting the carbon and nitrogen cycles?
A
we are burning too much firewood
B
we are burning fossil fuels that release these gases into the air
C
we are planting and harvesting too many trees
D
we are overhunting animals that have carbon and nitrogen in them
14) In a food chain, an arrow is drawn from a grasshopper to a bird. What does this mean?
A
the energy is flowing from the grasshopper to the bird
B
the energy is flowing from the bird to the grasshopper
C
the grasshopper eats the bird
D
the bird eats the grasshopper
*select an answer for all questions
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