Carbon Part 1
Carbon Part 2
Nitrogen Cycle
Phosphorus Cycle
100

This is when the pH of the ocean decreases (becomes more acidic) because of excess carbon absorbed.

What is ocean acidification?

100

This plant process takes in carbon dioxide.

What is photosynthesis?

100

True or false: Humans can use nitrogen for their DNA by breathing it in the air.

False

100

This is why humans need phosphorus.

What are DNA, RNA, ATP, and the phospholipid bilayer?

200

How humans have put excess carbon into the atmosphere

What is the burning of fossil fuels?

200

This process in animals and plants takes in oxygen and releases carbon dioxide.

What is cellular respiration?

200

Excess nitrogen in fertilizer runoff can lead to excessive growth of this living thing.

What is algae?

200

True or false: Phosphorus can be found cycling through the atmosphere

False

300

This is a natural way that carbon is released from the geosphere to the atmosphere.

What are volcanic eruptions?

300

This is an example of a slow carbon process.

What are mountain formation, limestone formation, weathering, erosion, and fossil fuel formation?

300

This is the definition of nitrogen fixation.

What is the process of converting atmospheric nitrogen to a nitrogen compound (ammonia, nitrite, and nitrate) in the soil?

300

True or false: Phosphorus can be found in rocks

True

400

This type of gas, such as carbon dioxide, traps heat in the atmosphere.

What are greenhouse gases?

400

This is how carbon moves from the biosphere to the geosphere.

What is decomposition?

400

This type of bacteria converts nitrates (NO3-) in the soil back into nitrogen gas (N2).

What are denitrifying bacteria?

400

This is a major human source of excess nitrogen and phosphorus in the environment

What is fertilizer?

500

This source of carbon used daily by humans takes millions of years to form.

What are fossil fuels?

500

This is a place where carbon is stored, such as the ocean or limestone.

What is a carbon reservoir?
500

This natural phenomenon can convert nitrogen in the air (N2) directly into nitrate (NO3-) without using bacteria.

What is lightning?

500

This term describes excess nutrients (such as nitrogen and phosphorus) in the water, leading to harmful algal blooms.

What is eutrophication?

M
e
n
u