Oxygen Cycle Quiz

See if you know about the oxygen cycle!See if you know about the oxygen cycle!See if you know about the oxygen cycle!See if you know about the oxygen cycle!See if you know about the oxygen cycle!See if you know about the oxygen cycle!See if you know about the oxygen cycle!See if you know about the oxygen cycle!See if you know about the oxygen cycle!See if you know about the oxygen cycle!See if you know about the oxygen cycle!See if you know about the oxygen cycle!See if you know about the oxygen cycle!See if you know about the oxygen cycle!See if you know about the oxygen cycle!See if you know about the oxygen cycle!

See if you know about the oxygen cycle!See if you know about the oxygen cycle!See if you know about the oxygen cycle!See if you know about the oxygen cycle!See if you know about the oxygen cycle!See if you know about the oxygen cycle!See if you know about the oxygen cycle!See if you know about the oxygen cycle!See if you know about the oxygen cycle!See if you know about the oxygen cycle!See if you know about the oxygen cycle!See if you know about the oxygen cycle!See if you know about the oxygen cycle!See if you know about the oxygen cycle!

What is your age?
Under 18 Years Old
18 to 24 Years Old
25 to 30 Years Old
31 to 40 Years Old
41 to 50 Years Old
51 to 60 Years Old
Over 60 Years Old
What is your gender?
Male
Female
1. Why is the level of atmospheric oxygen relatively stable despite the burning of fossil fuel and the reduction of forests?
Superman is making it stable
Oxygen level is not influenced by air pollution
The agriculture advances worldwide has increased plant productivity
The statement is wrong. The oxygen in the air is decreasing
2. What is PHOTOSYNTHESIS?
the process of taking pictures
the process of plant manufacturing sugars by taking in CO2
the process of animals breathing in air
the process of burning fossil fuels
3. How is photosynthesis related to the oxygen cycle?
photosynthesisi is not related to the oxygen cycle!!!!
Oxygen is released during the process of photosynthesis
Carbon dioxide is released during the process of photocynthesis
4. How are we part of the oxygen cycle?
we breath in Co2 and breath out oxygen
We breath in oxygen and breath out clean oxygen
We breathe in oxygen and breath our Co2
5. What is the end product of respriration?
Oxygen
nitrogen
H2O
Co2
6. Why do living things need oxygen?
we need it in the process of celluar respiration, or else, we will DIE!
we dont need oxygen if we take enough sugar
we don't need oxyge at all
7. Which of the following contributes most to the oxygen in the air?
Humans
Forest
Ocean Algae
8. What is the difference between aerobic respiration and photosynthesis?
aerobic respiration happens only in humans while photosynthesis happens in all living organisms
aerobic respiraton happens in all living organisms while photosynthesis happens only in the grren plats
aerobic respiration is just another name for photosynthesis
9. Can Oxygen exist in water?
Yes, it is used by many aquatic life
oxygen cannot be dissolved in water
Yes but it is not used by living organisms
10. What do plants need to do photosynthesis?
Carbon dioxide + water + sunlight
Carbon dioxide+ sugar
Sugar+ sunlight
Water only

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