Show:
Water Cycle
Nitrogen Cycle
Sulfur
Phosphorus Cycle
Carbon Cycle
100
Water falling to the earth from condensed clouds is known as what?
What is precipitation.
100
What is wrong with atmospheric nitrogen?
What is "we can't use it".
100

What is the main way that sulfur is naturally released into the atmosphere?

volcanoes

100
The majority of the phosphorus in the world is stored in what?
What is rocks.
100
Which biological process do plants use to take in carbon dioxide from the atmosphere and get energy?
What is photosynthesis.
200

What happens to water that falls as precipitation? (name 3 processes)

runoff; infiltration; evaporation)

200

What "drives" the nitrogen cycle?

What is bacteria (either in the soil or in the roots of legumes).

200

How is sulfur present in deep marine sediments?

H2S (reduced sulfur)

200
Phosphorus is used not only in energy and in cell processes (like enzymes and transport), but also in what?
What is forming DNA and RNA.
200
Name two ways that carbon is released into the atmosphere using biological processes?
What is cellular respiration and decomposition.
300
How does ocean/lake water return to the atmosphere?
What is evaporation.
300

Excess nitrogen in water may lead to ...

eutrophication

300
Atmospheric sulfur reacts with water vapor to form what?

sulfuric acid (acid rain)


300

What must happen to the rock in order for plants to absorb the phosphorus within them?

What is break down into soil and dissolve in water

300
Humans have contributed more carbon to the carbon cycle by doing what?
What is burning fossil fuels.
400
Which process within the water cycle is considered "biological"?
What is transpiration.
400

Planting legumes in a field the year before a crop will do what to the productivity of your field?

What is "increase productivity because there is more nitrogen in the soil".

400

What is the main cause of acid rain?

Burning coal

400
Herbivores and carnivores obtain phosphorus by doing what?
What is "consuming plants and/or animals that have phosphorus".
400
How do herbivores and carnivores get the carbon that they need?
What is "by consuming plants and/or animals that have carbon".
500
What is "transpiration"?
What is "when leaves release water through their underside to evaporate".
500
Nitrogen is used in the body to make what?
What is DNA and proteins.
500

What is DMS and where is it found?

dimethyl sulfur - in sea spray

500

How is the phosphorous cycle unique?

It does not enter the atmosphere.

500
Why do we need carbon?
What is "to form DNA and proteins". The creation of cells is also acceptable.