Question

In the third level of food chain 30J of energy was available to vultures.How much energy would've been available to producers?

Answer 1

The energy is passed on from trophic level to trophic level and each time about 90% of the energy is lost, with some being lost as heat into the environment (an effect of respiration) and some being lost as incompletely digested food (egesta). Therefore, primary consumers get about 10% of the energy produced by autotrophs, while secondary consumers get 1% and tertiary consumers get 0.1%. This means the top consumer of a food chainreceives the least energy, as a lot of the food chain's energy has been lost between trophic levels. This loss of energy at each level limits typical food chains to only four to six links.
So if at third level energy is 30 J then at second level will be 300 J and
At first level (producer) energy will be 10% more means 3000 J