If there are 1623-calories available at the first trophic level, approximately how many calories of energy would be available to a third level consumer (fourth tropic level)

1.623

Explanation:

There's a general rule about the movement of energy through the trophic levels. That rule says that every next trophic level gets 10% of the energy from the previous trophic level. If there are 1,623 calories in the first trophic levels, then the second trophic level will receive 162.3 calories. The next, third trophic level will receive 16.23 calories while the last fourth trophic level will receive 1.623 calories.

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