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