It is possible to hypothesize how a particular group of organisms evolved by arranging fossils in a chronological sequence. Where would the oldest fossils be found? A. the deepest rock layer
B. the most shallow rock layer
C. the rock layer with the greatest variety of fossils
D. the rock layer containing fossils with the most complex structures

Consider the following reaction at equilibrium: c(s)+h2o(g)⇌co(g)+h2(g) predict whether the reaction will shift left, shift right, or remain unchanged upon each of the following disturbances. a) c is added to the reaction mixture. b) h2ois condensed and removed from the reaction mixture c) co is added to the reaction mixture d) h2 is removed from the reaction mixture.