Define the Food

Define a food chain. Design a terrestrial food chain of four trophic levels. If a pollutant enters at the producer level, the organisms of which trophic level will have the maximum concentration of the pollutant in their bodies ? What is this phenomenon called ?

Define the term digestion. List the food contents that need digestion.

In many cells, as in protists, food vacuoles are formed by engulfing the food particles

Define food web.

Define food web ? Given its characters and example