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Ecological Cycles
Test Description: 1st test
Instructions: Answer all questions to get your test result.
1) What removes oxygen from the air?
A
respiration
B
sunlight
C
photosynthesis
D
water
2) Ten percent of energy is transferred from one level to the next level on the energy pyramid. What happens to the other 90% of energy?
A
stored as fat
B
lost as heat
C
used in reproduction
D
stored as protein
3) Plants are
A
producers
B
omnivores
C
herbivores
D
consumers
4) An organism that uses energy to produce its own food supply from inorganic compounds is called a(an)
A
autotroph
B
heterotroph
C
consumer
D
detrivore
5) Nitrogen fixation is carried out primarily by
A
plants
B
humans
C
consumers
D
bacteria
6) During nitrogen fixation, nitrogen gas is converted to a form that _____ can use
A
scavangers
B
animals
C
fungi
D
plants
7) The breakdown of dead materials into carbon dioxide and water is called
A
evaporation
B
photosynthesis
C
respiration
D
decomposition
8) Water leaving the plants is called?
A
condensation
B
evaporation
C
precipitation
D
transpiration
9) Water that gets heated leaves from the ocean through the process of _______________
A
precipitation
B
condensation
C
transpiration
D
evaporation
10) Biotic and abiotic factors together make up a(n)
A
ecosystem
B
community
C
individual species
D
population
11) When organisms interact and both benefit from the interaction, what term is used to describe this interaction?
A
commensualism
B
mutualism
C
parasitism
D
predator prey
12) The burning of fossil fuels has the greatest and most direct impact on the
A
rock cycle
B
phosphorous cycle
C
carbon cycle
D
nitrogen cycle
13) Carbon is removed from the atmosphere through what process?
A
respiration
B
burning fossil fuels
C
photosynthesis
D
deforestation
14) This process is responsible for excess nitrogen and phosphorus entering streams and oceans.
A
run off
B
emmision
C
decay
D
respiration
15) Use of agricultural fertilizers adds excess _____ to ecosystems and can cause eutrophication of waters.
A
carbon
B
nitrogen
C
nitrogen and phosphorous
D
phosphorous
*select an answer for all questions
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