Fill In the blanks: In aquatic ecosystems, the limiting factor for the productivity is __________.

Define limiting factor.

Fill in the blanks: 0-:15= ……

What is the limiting factor in productivity in deep oceans?

Fill In the blanks: In an ecosystem dominated by trees, the pyramid (of numbers) is _____________type.

Pyramid of energy in aquatic ecosystem is

Fill in the Blanks: The area of || gm is equal to the product of any of its sides and ____________ altitude.