Which of these is an example of negative feedback? which of these is an example of negative feedback? the end product of a reaction sequence shuts down the reaction sequence. the end product of a reaction sequence speeds up the reaction sequence. the first enzyme in a reaction sequence lowers the activation energy of thereaction. the first enzyme in a reaction sequence makes the free energy change of thereaction more negative. the end product of a reaction sequence has no effect on the reaction sequence.

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?