PEE m4
refers to the recycling of carbon and oxygen.
CARBON DIOXIDE-OXYGEN CYCLE
is second most abundant gas in the atmosphere (28%) and one of the most common element in human body.
Oxygen
It helps to moderate the Earth’s temperature as GHG and an element present in the food like carbohydrates.
Carbon
It helps to moderate the Earth’s temperature as GHG and an element present in the food like carbohydrates.
Carbon
is the backbone of all life
Carbon
is a process where plants and other organisms convert carbon dioxide, water and energy from the sun to produce sugar and oxygen.
Photosynthesis
balances with photosynthesis, as heterotrophs use the byproducts of photosynthesis for respiration, while autotrophs use the byproducts of respiration for photosynthesis.
Photosynthesis
is a process where living organisms produce energy.
Photosynthesis
Most organisms respire by breathing in
oxygen
Most organisms respire by releasing
carbon dioxide
includes volcanic eruption
Natural combustion
It occurs when any organic material is burned in the presence of oxygen to give off carbon dioxide.
Combustion
is the process of burning
Combustion
Most pollution problems occur because of car and factories.
Combustion
The dead animal rots and decays into the ground, releasing all the carbon, oxygen and nutrients back intothe ground and air.
Decomposition
organism deteriorates into particles and becomes part of the soil.
Decomposition
happens when an organism dies.
Decomposition