$PAR$ stands for
Photosynthesis Active Reaction
Photosynthesis Absorb Radiation
Photosynthetically Active Radiation
Photosynthetically Active Reaction
Driving force of any ecosystem is
The order of organism in an aquatic food chain is
If forest area is reduced to half, which one of the following will be a long term effect
Which of the following are the essential sources for releasing in the atmosphere?
$I.$ Burning of wood
$II.$ Volcanic activity
$III.$ Combustion of organic matter
$IV.$ Fossil fuels
Choose the correct option
We refer to the following as the food chain