37.19 Carbon Cycle

Question 1

What form is carbon cycled in

Answer 1

carbon dioxide

Question 2

Chemical Formula of carbon dioxide

Answer 2

CO2

Question 3

How much of the atmosphere is CO2

Answer 3

0.03%

Question 4

Does carbon dioxide cycle globally or locally

Answer 4

globally

Question 5

What is the abiotic reservoir of carbon dioxide

Answer 5

the atmosphere

Question 6

How many steps does the Carbon Cycle have

Answer 6

5

Question 7

What is the first step of the Carbon Cycle

Answer 7

Photosynthesis removes CO2 from the atmosphere and incorporates it into organic molecules

Question 8

What organisms do the first step of the Carbon Cycle

Answer 8

Producers

Question 9

What is the second step of the Carbon Cycle

Answer 9

The organic molecules and CO2 from step 1 are passed along the food chain through consumers

Question 10

What is the third step of the Carbon Cycle

Answer 10

Cellular Respiration returns CO2 to the atmosphere as a waste product

Question 11

What organisms do the third step of the Carbon Cycle

Answer 11

producers and consumers

Question 12

What is the fourth step of the Carbon Cycle

Answer 12

Decomposers break down carbon compounds in detritus (of producers and consumers) and release it as CO2

Question 13

What is also released in the fourth step of the Carbon Cycle

Answer 13

CO2 because the decomposers also respire and release CO2

Question 14

What is the fifth step of the carbon cycle?

Answer 14

The increased burning of wood, deforestation, fossil fuels, and volcanic erruptions raises the level of CO2 in the atmosphere

Question 15

Why does the burning of wood increase CO2

Answer 15

Burning releases CO2 and trees are carbon sinks, so when you burn them there is more carbon in the air because they are not in the air

Question 16

On a global scale, the return of CO2 to the atmosphere by cellular respiration and the removal by photosynthesis is

Answer 16

closely balanced

Question 17

What would happen to the carbon cycle if all the decomposers suddenly “went on strike” and stopped working?

Answer 17

Carbon would accumulate in organic material, the atmospheric reservoir of carbon would decline, and plants would eventually be starved for CO2.

Question 18

Combustion

Answer 18

burning

Question 19

Carboniferous Period

Answer 19

the period in time in which many fossil fuels were largely deposited because of the sudden rise and fall of tides

Question 20

What did the Carboniferous Period lead to

Answer 20

combustion today and the release of CO2 (which adds to the carbon cycle)