Dairy farmers have to import the nutrients phorphorus, potassium & sulfer because

the break in the rainforest nutrient cycle

When water flows over porous soils

overland flows soak through easily to the groundwater

The carbon cycle reveals that phytoplankton growing in the oceans

takes in carbon & releases oxygen

zone around the earth where all life exits

The 4 spheres which make up the biophysical environment are:

lithosphere, hydrosphere, biosphere,atmosphere

Ships are unable to travel far up the Bellinger River because

so much sediment has been deposited on the riverbed

To decrease their reliance onchmeical fertilisers, dairy farmers

turn to their cows to use their manure as fertiliser

The clearing of native forests

increases water flow to the river

The Bellinger River catchment is an example of

cycling of water at a regional scale

The cryosphere refers to:

freshwater locked up in ice sheets and glaciers

The soils beneath Dorrigo National Park

were deposited by a volcanic eruption 18 million years ago

Dorringo National Park rainforest is an example of the:

nutrient cycle operating at a local scale

carbon is released to the atmosphere

Urban development affect catchments through

increasing water flows to the river

European settlers on the Dorrigo Plateau first occured in

late 1880s, mainly by timber cutters

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Introducing Ecosystems

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Questions from Clickview "The Biophysical Environment; Ecosystems and interactions" Classroom Video

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Questions 23

Answers

1
Dairy farmers have to import the nutrients phorphorus, potassium & sulfer because
the break in the rainforest nutrient cycle
grass won't grow in the winter season
government subsidies on superphosphate
dairy cattle need these nutrients in their feed
2
The amount of accessible freshwter in the hydrosphere is
>1%
>10%
>15%
>20%
3
Shells are made up of
dolerite, gneiss
all of the above
mica, quartz, felspars
calcium carbonate
4
The atmosphere is made up of:
two different levels
four different levels
one different level
three different levels
5
When water flows over porous soils
it picks up large amounts of silt /clay in suspension
all of the above
drainage is impeded
overland flows soak through easily to the groundwater
6
The carbon cycle reveals that phytoplankton growing in the oceans
takes in carbon & releases nitrogen
takes in nitrogen & releases carbon
takes in oxygen & releases carbon
takes in carbon & releases oxygen
7
The biosphere is:
zone around the earth where all life exits
zone around the earth containing continental & oceanic crust
zone around the earth containing gasses
zone around the earth containing water
8
The 4 spheres which make up the biophysical environment are:
lithosphere, hydrosphere, biosphere,atmosphere
geosphere, ecosphere,biosphere, lithosphere
lithosphere, hydrophere, cryosphere, geosphere
cryosphere, lithosphere, atmosphere, ecosphere
9
The lithosphere is split up into many parts called:
fault zones
volcanoes and earthquakes
subduction zones
tectonic plates
10
Ships are unable to travel far up the Bellinger River because
the river currents are too swift and unpredicatable
so much sediment has been deposited on the riverbed
the river is too narrow
too many bridges impede their passage
11
Catchments function as a result of interactions between
water and climate
all of the above
gravity and topography
soil types and vegetation
12
To decrease their reliance onchmeical fertilisers, dairy farmers
turn to their cows to use their manure as fertiliser
stall feed their cattle
change to growing avocado trees
use permaculture tecniques
13
The clearing of native forests
decreases waterflow to the river
increases water flow to the river
decreases the likelihood of drought
increases the likelihood of drought
14
Decomposers
all of the above
break down matter & release nutrients as a gas
break down matter & release nutrients for roots to take up
break down matter & release nutrients from organic material
15
The Bellinger River catchment is an example of
cycling of water at a regional scale
cycling of water at a national scale
cycling of water at a continental scale
cycling of water at a global scale
16
Water is cycled back up into the atmosphere through
evaporation and precipitation
all of the above
transpiration and evaporation
transpiration and precipitation
17
The cryosphere refers to:
freshwater locked up in ice sheets and glaciers
the coldest part of athe biosphere
the upper part of the atmosphere
an internal sectioin of the lithosphere
18
The soils beneath Dorrigo National Park
are stony and infertile
are best described as mellow textured duplex soils
formed under coniferous forest ecosystems
were deposited by a volcanic eruption 18 million years ago
19
Dorringo National Park rainforest is an example of the:
nutrient cycle operating at a continental scale
nutrient cycle operating at a local scale
nutrient cycle operating at a global scale
nutrient cycle operating at a national scale
20
Ecosystems
can be of any size
are continental in scale
area at least the size of a billabong
must be 10 km2
21
When volcanoes erupt
finely pulverised fragments of rock & lava go to the cyros
carbon is stored in the lithosphere
lava spills out through fissures into the hydrosphere
carbon is released to the atmosphere
22
Urban development affect catchments through
decreasing the likelihood of drought
increasing water flows to the river
increasing the likelihood of drought
decreasing water flows to the river
23
European settlers on the Dorrigo Plateau first occured in
late 1880s, mainly by timber cutters
late 1930s, mainly by dairy farmers
late 1780s, mainly by timber cutters
late 1960s, mainly by hippies

Introducing Ecosystems Flashcards | StudBud