What type of pyramid of biomass is found in the sea?

In a pyramid of biomass, $P$ is at the highest trophic level, $Q$ is at the second trophic level, and $R$ is at the lowest trophic level. Identify $P, Q,$ and $R$.

The relation between producers and consumers in an ecosystem can be graphically represented in the form of a pyramid called

In which of the following is the pyramid of biomass $NOT$ upright?

In a food chain of Grass $\rightarrow$ Deer $\rightarrow$ Tiger,the biomass of grass is $1$ tonne. What will be the biomass of the tiger (in $,kg$)?

Which of the following types of pyramids represents the energy flow or functional capacity of an ecosystem?