What is the effect of photosynthesis with regards to the carbon cycle?

Decreases the amount of atmospheric carbon.

A sink is defined as:

A part of an ecosystem that stores a substance.

The burning of fossil fuels is a serious disruption to the carbon cycle because:

It produces CO2 faster than carbon is stored as fossils.

Why is nitrogen so important for living things?

It;s needed for making proteins.

Atmospheric nitrogen is abundant. Why, then, is nitrogen a limiting factor for plants?

Atmospheric nitrogen is biologically unusable.

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Carbon and Nitrogen Cycle Review

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A quiz touching on the carbon cycle, oxygen cycle, and nitrogen cycle, as well as some human disruptions for my grade 10 science class.

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Questions 16

Answers

1
What is the effect of photosynthesis with regards to the carbon cycle?
Reduces the amount of carbon available for consumers.
Increases the amount of atmospheric carbon.
Decreases the amount of atmospheric carbon.
It locks carbon out of the carbon cycle.
2
What is a big way we, as humans, are impacting the Nitrogen cycle?
Preventing nitrogen uptake.
Increasing available nitrogen.
Decreasing available nitrogen.
Removing nitrogen sinks.
3
Which type of carbon transfer does NOT involve a transfer between the biotic and abiotic?
Consumption
Combustion
Cellular Respiration
Photosynthesis
4
A sink is defined as:
A series of small cycles.
An area where plants and animals gravitate.
A part of an ecosystem that stores a substance.
Those things along the benches.
5
____ removes carbon from atmosphere, while ____ releases carbon into the atmosphere.
Respiration/Photosynthesis
Respiration/Combustion
Combustion/Photosynthesis
Photosynthesis/Respiration
6
What is an important consequence of using nitrogenous fertiliizers?
Crops dying.
Livestock dying.
Increased atmosphering nitrogen.
Runoff causing algal blooms.
7
Biogeochemical cycles: where a substance cycles through _____ and _____ parts of the biosphere.
carbon / nitrogen
non-living / abiotic
living / biotic
biotic / abiotic
8
What is the key factor that fixes nitrogen into a usable form for organisms?
Nitrogen Fixing Animals
Bacteria
Plant Roots
Legumes
9
Cellular respiration has ___________ on the product side of the equation.
Energy and O2
CO2 and O2
Energy and CO2,
Sugar and H2O
10
What is the single biggest issue resulting from human disruption of the carbon cycle?
Rising Sea Levels
Decreased Oxygen Levels
Climate Change
Violent Weather Patterns
11
The burning of fossil fuels is a serious disruption to the carbon cycle because:
It slows down the uptake of carbon by plants.
It produces CO2 slower than carbon is stored as fossils.
It prevents plants from taking up carbon compounds.
It produces CO2 faster than carbon is stored as fossils.
12
All of the following increase the amount of atmospheric carbon except:
Animal Agriculture
Removal of plants
Violent Weather
Volcanic Eruptions
13
Why is nitrogen so important for living things?
It's required for Cellular Respiration.
It;s needed for making proteins.
It's not.
It's necessary for Photosynthesis.
14
Atmospheric nitrogen is abundant. Why, then, is nitrogen a limiting factor for plants?
Atmospheric nitrogen is inert.
Atmostpheric nitrogen is difficult to absorb.
Atmospheric nitrogen is biologically unusable.
Atmospheric nitrogen is toxic to organisms.
15
Atmospheric carbon is usually in what form?
C2
CH4
CO3
CO2
16
What is an important disruption in the oxygen cycle, due to algal blooms?
Anoxic (without oxygen) Zones
Increased levels of animal respiration.
Decreased levels of plant respiration.
Hyperoxic (too much oxygen) Zones

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