Identify the possible link “$A$” in the following food chain.

Plant $→$ Insect $→$ Frog $→$ “$A$” $→$ Eagle

Consider the following statements about food chain

$I.$ The transfer of energy from producers to top consumers through a series of organisms is called food chain

$II.$ A food chain is always straight and proceeds in a progressive straight line

$III.$ In a food chain, there is unidirectional flow of energy from sun to producers and subsequently to series of different types of consumers

Which of the statements given above are correct?

Name any two organisms which can occupy more than one trophic level in an ecosystem.

The snakes are included under

How much percentage of absorbed water is used in photosynthesis