Air Around Us

what is created by smoke

• Carbon Dioxide

• Oxygen

• Nitrogen

• Dust partclies

what do we exhale and inhale

• Carbon dioxide and oxygen

• Nitrogen and carbon dioxide

• Dust particles and nitrogen

• Oxygen and dust particles

Balance of Oxygen and carbon dioxide in atmosphere is maintained By :

• Plants

• Animals

• Humans

• All of These

Which of the following represents photosynthesis?

• water + oxygen----> carbon dioxide + carbohydrate

• carbon dioxide + water---->oxygen + carbohydrate

• carbohydrate + oxygen---> water + oxygen

What are the properties of air?

• Air occupies space.

• Air is present everywhere around us.

• Air has no colour and one can see through it.

• It is transparent.

Oxygen liberated during photosynthesis comes from

• water

• chlorophyll

• carbon dioxide

• glucose

During photosynthesis, the oxygen in glucose comes from

• CO 2

• Water

• Both

• Oxygen Via Air

what upsets the oxygen Balance in the air

• Green House Gases

• Water

• Carbon Dioxide

• Nitrogen

The Balance Of CO2 And O2 In the Atmosphere is due to __________

Draw a smoke creating CO2