Energy flow and energy transformations in living systems strictly conform to the

Why are oceans least productive ?

Consider the following statements concerning food chains.

$I$. Removal of $80\; \%$ tigers from an area resulted in greatly increased growth of vegetation.

$II.$ Removal of most of the carnivores resulted in an increased population of deers.

$III.$ The length of food chains is generally limited to $3$ to $4$ trophic levels due to energy loss.

$IV.$ The length of food chains may vary from $2$ to $8$ trophic levels.

Which two of the above statements are correct?

In a terrestial ecosystem such as forest, maximum energy is in which trophic level

What is the percentage of photosynthetically active radiation $(PAR)$, in the incident solar radiation.

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