Why does an energy pyramid show a decrease of energy in every trophic level?
a). much of the energy from the organism consumed is lost as heat.
b). the higher the trophic level, the less energy needed for survival.
c). all of the energy is converted to the mass of the larger organism in the food chain.
d). the higher the trophic level, the more efficient the energy consumption of the organism.

Pegmatites are igneous rocks in which the individual minerals are very large. typically, the minerals are all light-colored quartz, feldspar and muscovite. if you were given a black and white photograph of a pegmatite in a quarry (where the rock has been blasted and broken), what physical properties could you use to identify those three minerals in this hypothetical photo? describe each mineral and the specific diagnostic properties. be specific.