How Ecosystem Work Question Preview (ID: 43455)


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Gas makes up our atmosphere but can be used by plants only when transformed by bacteria first
a) oxygen
b) hydrogen
c) carbon dioxide
d) nitrogen

Describe the relationship between photosynthesis and cellular respiration
a) they are each performed by producers
b) they both include the product oxygen
c) they are inversely proportional
d) they both include sunlight as an engry

Nitrogen-fixing bacteria convert atmospheric nitrogen into
a) nitrous oxide
b) glucose
c) ammonia
d) phosphate

The highest organism on the food chain
a) herbivores
b) decomposer
c) ominvore
d) carnivore

If an insect eats a plant and a bird eats the insect, about how much energy from the plant is stored in the insect for the bird to use?
a) 10 %
b) .1%
c) 100%
d) 1%

Growth of plants after a forest fire is an example of
a) Primary Succession
b) Old-Field succession
c) Pioneer Species
d) Secondary Succession

Most of the Earth's carbon is secured in
a) fossil fuels
b) limestone
c) ammonia
d) glucose

Excessive algae growth in freshwater ecosystems is a direct result of
a) global warming
b) fertilizer overusage
c) acid precipitation
d) nitrogen cycle

Which organisms are most likely to arise in areas experiencing primary succession?
a) gymnosperms
b) angiosperms
c) lichens
d) mosses

The process of breaking down food to yield energy is called
a) cellular respiration
b) photosynthesis
c) cellular reproduction
d) chemosynthesis

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