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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 eating things that have carbon
B
by exercising
C
through transpiration
D
through respiration
2) Carbon is the building block of________
A
cells
B
life
C
energy
D
matter
3) How do humans get rid of extra carbon?
A
by sweating
B
by exercising
C
through respiration
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 there aren't enough nutrients for plants to make their own food
C
because the water is too salty to support the life of plants
D
because sunlight does not reach that deep so plants can't make their own food
6) In which biome would you find trees that go dormant in the winter?
A
deciduous forest
B
tropical rainforest
C
taiga
D
tundra
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 call 911
C
they would eventually all die
D
they would adapt and eat other things
8) Since plants can't use the nitrogen that's in the air, what helps change the nitrogen into a usable form?
A
water and sunlight
B
photosynthesis and respiration
C
ammonia and nitrates
D
bacteria and lightning
9) Which level of the energy pyramid has the most energy?
A
the secondary consumers
B
the primary consumers
C
the producers
D
the tertiary consumers
10) Which of the following is an important ABIOTIC factor of the desert?
A
sandy soil
B
jackrabbits
C
scorpions
D
cacti
11) Which is an important ABIOTIC factor of the tundra?
A
polar bears
B
moss and lichen
C
snowy owls
D
permafrost
12) Why are evergreen trees able to survive the environment of the taiga?
A
they go dormant until it is spring
B
they grow close together and have needle like leaves to conserve moisture
C
they know that nothing will eat them in the winter
D
they lose their leaves and sleep until spring
13) How are humans upsetting the carbon and nitrogen cycles?
A
we are overhunting animals that have carbon and nitrogen in them
B
we are burning too much firewood
C
we are planting and harvesting too many trees
D
we are burning fossil fuels that release these gases into the air
14) In a food chain, an arrow is drawn from a grasshopper to a bird. What does this mean?
A
the bird eats the grasshopper
B
the grasshopper eats the bird
C
the energy is flowing from the grasshopper to the bird
D
the energy is flowing from the bird to the grasshopper
*select an answer for all questions
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