Cycles In Ecosystems Question Preview (ID: 58619)


Cycles In Ecosystems. TEACHERS: click here for quick copy question ID numbers.

I fall on Earth’s surface as rain, snow, sleet, or hail. What am I?
a) runoff
b) groundwater
c) evaporation
d) precipitation

I am the changing of a liquid into a gas. What am I?
a) condensation
b) compost
c) evaporation
d) groundwater

I am a mixture of decayed plant and animal material that can be used as fertilizer. What am I?
a) groundwater
b) compost
c) runoff
d) nitrogen cycle

I am the continuous changing of nitrogen gas into compounds in the soil and its later release back to the air. What am I?
a) nitrogen cycle
b) carbon cycle
c) compost
d) precipitation

I am water that sinks beneath the ground and collects in tiny holes in soil and rock. What am I?
a) runoff
b) condensation
c) precipitation
d) groundwater

I am the continuous exchange of carbon among living things. What am I?
a) nitrogen cycle
b) evaporation
c) carbon cycle
d) compost

I am precipitation that flows over the land’s surface into rivers and lakes and is not absorbed into the ground. What am I?
a) groundwater
b) runoff
c) evaporation
d) condensation

I am the changing of a gas into a liquid as the gas cools. What am I?
a) condensation
b) evaporation
c) precipitation
d) runoff

Plants use nitrogen in the form of __________________.
a) atmosphere
b) nitrates
c) fixation
d) decomposers

Organisms called ___________________ release carbon dioxide when they break down dead organisms.
a) nitrates
b) precipitation
c) decomposers
d) runoff

Water condenses in the atmosphere and falls, as _____________ into oceans and the ground, or over land as ____________.
a) runoff
b) fixation
c) evaporation
d) precipitation

Nitrogen ____________________ places nitrogen in a form in which it can be used by most living organisms.
a) fixation
b) decomposers
c) runoff
d) nitrates

Carbon dioxide is released back into the _________________ when living things use it as food.
a) evaporation
b) atmosphere
c) precipitation
d) runoff

Heat causes water to rise from Earth’s surface as a gas through a process called _______________________.
a) fixation
b) condensation
c) evaporation
d) runoff

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