Pyramid of numbers - a ginphical copresutatin of the relationships amugst trophic levels that relates the numbers of organisms to one onother.
-This shows how in most lases there are many more.
-Organism the lower trophic levels.
-This mules sense in krms physical size.
-Fl problam alises when one trophic levels contrin organisms that are smaller thar the organism they feed on.

Pyramid of biomass - similar to a pyramid of numbers but the quantities express.biomass(the amount of living mass)
]-This warks in most sitrstivns
-However the exception is in the ocean, the zooplankton(tiny consumers) have a much greater mass than the phy ti planktin(algaešpriducer) they feed on.
-The phytoplankton is able to sustain its population because of how gvickly they can raproduce.

Pyramid of energy - will always point up the trophic levels.
- This helps as understand why there is seldom more than ylanks in a foodchain.