hydrology nutrient cycle Flashcards

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1
Q

Distribution of water is not

A

static

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1
Q

water moves
among various reservoirs of

A

the hydrologic cycle.

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2
Q

Sun warms the ocean surface
and other surface water

A

causing liquid water to
evaporate

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2
Q

percolate

A

sink down

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3
Q

water moves along the surface
as runoff only when

A

the soil is saturated

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4
Q

terrestrial,
ecosystems in their natural
rain usually hits the

A

leaves and other surfaces of plants before it reaches the soil

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5
Q

If water is not taken up by plant roots, it may

A

percolate down into the subsoil and bedrock,
forming groundwater

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5
Q

Groundwater is water found in the

A

pores between particles in sand and gravel or in the
cracks in rocks

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5
Q

groundwater is

A

an important reservoir of
freshwater.

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5
Q

Aquifers

A

groundwater reservoirs

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5
Q

many aquifers are being used up

A

faster than
they’re renewed by water that moves down from
above

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5
Q

They hydrologic cycle can
help cycle elements
(nutrients)

A

through the
environment

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5
Q

hydrologic cycle

A

important in moving elements from terrestrial to aquatic ecosystems

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6
Q

Nutrient cycling

A

use, transformation, movement, and reuse of nutrients.

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7
Q

Energy makes

A

one-way trip through
ecosystems.

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8
Q

The path atoms take from the living (biotic) to the non-living
(abiotic) world and back again is called a

A

biogeochemical
cycle

9
Q

there are 50 - 70 elements

A

found in living organisms

10
Q

Storage in

A

nutrient pools or compartments

11
Q

Movement, or nutrient flux,

A

between pools in
an ecosystem

12
Q

Nutrient sink

A

absorbs a nutrient faster than
releasing it.

13
Q

Nutrient source

A

releases nutrient faster than it is absorbed

14
Q

The carbon cycle

A

Rapid carbon exchange
between living organisms, Long-term cycling of carbon through geologic processes

15
Q

how much of our body is carbon

A

~18%

16
Q

Carbon exists in the air largely as

A

carbon dioxide

17
Q

Cellular respiration converts the organic carbon

A

back into CO2 gas

18
Q

Mineralization

A

Conversion from organic to inorganic form

19
Q

mineralization occurs

A

primarily during decomposition

20
Q

Geologic processes in the C cycle

A

happen much more slowly

21
Q

Carbon-containing sediments in the
ocean floor are taken deep within the
Earth in a process called

A

subduction, in
which one tectonic plate moves under
another

22
Q

Increased atmospheric CO2

A

is directly correlated with
increased annual mean
temperatures globally

23
Q

Nitrogen is a key component

A

of the bodies of
living organisms.

24
Q

nitrogen makes up

A

78% of atmosphere

25
Q

Bacteria can convert N2 gas

A

into a useable
form

26
Q

Phosphorus is often the

A

limiting nutrient in aquatic ecosystems

27
Q

Eutrophication

A

a process by which
excess nutrients in aquatic ecosystems feed biological
productivity

28
Q

Eutrophication

A

LOWERS OXYGEN IN WATER, MAKING DEAD ZONES