The original source of energy for the pyramid is the
a) sun.
b) all photosynthetic organisms.
c) decomposers, not seen in the pyramid.
d) phytoplankton, which are photosynthetic.

A

Explanation: he Sun is the original source of energy in all food chains on the surface of the Earth and in the upper parts of the Oceans. Primary Producer.

the endomembrane system is a series of compartments that work together to package, label, and ship proteins and molecules. in your cells, the endomembrane system is made up of both the endoplasmic reticulum and the golgi apparatus. these compartments are folds of membranes that form tubes and sacs in your cells.

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