Define ecological niche.

Define ecology.

Define ecological succession. Give four differences between seral and climax community.

Define ecological succession. List any two characteristics of it. Distinguish between primary and secondary succession.

What is the significance of ecological niche?

Who gave the term ecological niche?

Define ecological pyramids. Name different types of ecological pyramids?

Define ecological pyramids and describe the pyramid of number.

Define ecological pyramid and describe pyramids of number and biomass.