In a(n) production system, most people produce their own food, but an aristocracy controls a portion of the production.

The diagram below shows the layers of a rock having a trilobite: a rock column labeled rock is shown. the column has three layers. the bottommost layer of the rock has one shaded rhomboid shape, the middle layer has a rhombus with a diagonal along with two identical organisms marked as, trilobite, in the key, the top layer has two semicircles. a key is shown on the right side of the diagram. the shaded rhombus is marked as a, the rhombus with the diagonal is marked as b, the semicircle is marked as c which statement about the rock fossils is true?

The effect of a hormone on a target cell may be decreased by the presence of

Dna sequences in many human genes are very similar to the sequences of corresponding genes in chimpanzees. the most likely explanation for this result is that: