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5. If mice ate all of the plants, Type Hi kcal of

energy would be available to them as first-level consumers.
DUE
May 20 - 11:59 pm
THE ENERGY
PYRAMID
10 kcal 0.1
1 kcal
Third-Level
Consumers
1 kcal
Second-Level
Consumers
10 kcal
6. It all of the mice were eaten by snakes, the snakes would receive
Type Hi
kcal of energy-
100 kcal 0.1
10 kcal
First-Level
Consumers
100 kcal
1,000 kcal 0.1
100 kcal
7. If all of the snakes were eaten by the eagle, the eagle would receive
8. The eagle would use
Type Hi
kcal of energy
for its life processes.
9. The eagle's body would
store
Type Hi
kcal of
energy.

1 answer

To address your questions about energy transfer among trophic levels in an ecological pyramid, let's summarize the energy transfer based on the kcal data provided:

  1. First-Level Consumers (Mice):

    • If the plants provide 1,000 kcal of energy (as inferred from the pyramid structure, assuming it's a 10% energy transfer per level), the first-level consumers (the mice) would receive 100 kcal of energy.

  2. Second-Level Consumers (Snakes):

    • The snakes, being second-level consumers, would then receive 10 kcal of energy from each mouse they eat. If all the mice (100 kcal total) are consumed by the snakes, the snakes would obtain approximately 10 kcal of energy (this is likely derived from the 100 kcal of energy available to the snakes as per your excerpt).

  3. Third-Level Consumers (Eagles):

    • If all of the snakes are consumed by an eagle, the eagle would receive approximately 1 kcal of energy from the snakes, assuming that the same 10% energy transfer rate occurs.

  4. Energy for Life Processes:

    • Typically, animals use a significant portion of the energy they receive from their food (about 90%) for life processes like metabolism, growth, reproduction, and heat. Therefore, if the eagle received 1 kcal of energy, it might use about 0.9 kcal for its life processes.

  5. Energy Stored in the Eagle's Body:

    • The eagle would store approximately 0.1 kcal of energy (or 10% of the energy received), which could be used for growth and reproduction.

Fill in the Blanks:

  • If mice ate all of the plants, Type Hi kcal of energy would be available to them as first-level consumers: 100 kcal
  • If all of the mice were eaten by snakes, the snakes would receive Type Hi kcal of energy: 10 kcal
  • If all of the snakes were eaten by the eagle, the eagle would receive: 1 kcal
  • The eagle would use Type Hi kcal of energy for its life processes: 0.9 kcal
  • The eagle's body would store Type Hi kcal of energy: 0.1 kcal

This illustrates the concept of energy transfer through an energy pyramid where approximately 10% of energy is passed to the next trophic level.