Chapter 2.3: Question Preview (ID: 7184)


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The law of conservation states that:
a) matter is not created or destroyed
b) matter can never be replenished
c) matter fluctuates from year to year
d) matter doesn't matter

How do nutrients cycle through the biosphere?
a) through organisms
b) through producers
c) through consumers
d) through plants

A chemical substance that an organism needs to perform life processes is called?
a) a nutrient
b) matter
c) nitrogen
d) oxygen

The combination of processes that exchange matter through the biosphere is called?
a) the biogeochemical cycle
b) the water cycle
c) the life cycle
d) the nitrogen cycle

Which statement is not a step in the water cycle?
a) weathering
b) evaporation
c) precipitation
d) transpiration

Autotrophs and heterotrophs release carbon dioxide into the air during:
a) cellular respiration
b) photosynthesis
c) denitrification
d) the phosphorus cycle

Nitrogen is returned to the soil when-
a) animals urinate and organisms die
b) humans pollute the ground
c) contaminates seep into the ground
d) plants grow

Growth of producers is limited by-
a) the amount of phosphorus available to them
b) the amount of consumers available
c) the amount of nitrogen compounds available
d) the amount of animal waste

Who begins the nutrient cycle through the biosphere?
a) producers
b) consumers
c) autotrophs
d) heterotrophs

At each step in the food web, organisms reuse __________ to make proteins.
a) nitrogen
b) oxygen
c) carbon dioxide
d) dioxide

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