The first law of thermodynamics states that energy can be transformed from one state to another, but it cannot be created or destroyed. Taking this into consideration, what can be said about the energy transferred between levels in a trophic pyramid?
A. Some of the energy in a trophic level is
converted to heat and is unavailable to the
next level.
B. All the energy is transferred between
trophic levels because components that have
no energy, that is, light, are used to create
the energy in the chemical bonds of
carbohydrates.
C. All the energy necessary for a trophic level
is transferred. Because there is less biomass
at each trophic level, less energy needs to be
transferred.
D. Some of the energy is held in one trophic
level, and only the energy needed to support
the smaller biomass at a higher level is
transferred.
E. Organisms at higher trophic levels only
consume the energy they need from lower
trophic levels, leaving a "bank" of energy to
support the higher level when food is scarce.
A
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