OXYGEN CYCLE

Question 1

Aquatic organisms are dependent on _____ dissolved in water.

Answer 1

oxygen

Question 2

the main source of oxygen present in the atmosphere

Answer 2

Photosynthesis

Question 3

physical process of inhaling oxygen from outside environment and exhaling carbon dioxide back in the atmosphere

Answer 3

Respiration / Breathing

Question 4

The dead animal or plants decay into the ground, and the organic matter along with the carbon, oxygen, water and other components are returned into the soil and air

Answer 4

Decomposition

Question 5

occur when any of the organic materials, including fossil fuels, plastics and wood, are burned in the presence of oxygen and releases carbon dioxide into the atmosphere.

Answer 5

Combustion