Oxygen Cycle

Question 1

Why is oxygen importantly

Answer 1

Oxygen is essential for the process of cellular respiration.

Oxygen is used in the breakdown of glucose to release energy.

Energy is required for growth and all metabolic activities in living organisms.

Question 2

Explain Stages in the oxygen cycle:

Plants

Answer 2

? CO2 is taken in by plants during photosynthesis and O2 is released into the atmosphere as a by-product of this process.
.

Question 3

Loving organisms

Answer 3

All living organisms take in O2 for respiration and breathe out CO2.

Question 4

Decomposition

Answer 4

? Decomposition requires O2 and releases heat, CO2 and water.

Question 5

What is the ozone layer made out of

Answer 5

O3

Question 6

What is the atmospheric layer made out of and what %

Answer 6

21% of O2

Question 7

How does atmospheric oxygen becomes ozone

Answer 7

O2 forms O3 in a complex process

Question 8

How does ozone becomes atmospheric oxygen

Answer 8

O3 is broken down by chlorine in CFCs to form O2