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josinclair73

Answer:

Energy that the clam get from eating the plankton is 5000 Kcal.

Explanation:

The right question should be:

If the Manta ray gets 50 KCal from energy by eating the starfish how much energy does the clam get from eating the plankton?

In an example of a marine ecosystem food chain, the energy flow may be

Planctom ----→ Clam ------→ Starfish ----→ Manta ray

Taking into account that at each level of the chain only a tenth of the energy of the previous level is used, it has to be:

Planctom --------------→ Clam --------------→ Starfish -----------→ Manta ray

50.000 Kcal - 10% = 5000 Kcal - 10% = 500 Kcal - 10% =  500 Kcal

  • The Manta Ray took 50 Kcal from the starfish, which had 500 Kcal.
  • Starfish took 500 Kcal from Clam, which had 5000 Kcal of energy.
  • Clam must have taken its 5000 Kcal from the plankton, which should have had 50,000 Kcal.

So the energy the clam got from the plankton was 5000 Kcal.