What will happen if the deer is missing in the food chain given below?
Grass $\to$ Deer $\to$ Tiger

Differentiate between autotrophs,heterotrophs,and decomposers and give one example of each.

$A$ biological community and its associated physical components interact to form a system. What is this system called?

What would happen if the number of carnivores decreases in an ecosystem?

Write two methods to reduce the use of pesticides.

Suggest one word for each of the following statements/definitions:
$(a)$ The physical and biological world where we live in
$(b)$ Each level of food chain where transfer of energy takes place
$(c)$ The physical factors like temperature,rainfall,wind and soil of an ecosystem
$(d)$ Organisms which depend on the producers either directly or indirectly for food