If $10,000 \;J$ of energy fall on piece of land, then what is energy available at $T_2$ level?
$1000\; J$
$10 \;J$
$100 \;J$
$1 \;J$
The amount of living matter present in an ecosystem at a given time is called
Secondary productivity is
The rate of formation of new organic matter by rabbit in a grassland, is called
In pond ecosystem, diatoms represent
Which one of the following is a correct food chain