You make the observation that walnut and Gingko trees lose…

  You make the observation that walnut and Gingko trees lose their leaves in the fall when day length starts decreasing.  Based on these observations, one may generalize and conclude that ALL tree species will lose their leaves in the fall in response to decreasing day length.  This statement is an example of….   

  We talked about chemical reactions (reactants and products…

  We talked about chemical reactions (reactants and products) and the concept of reversibility (i.e. forward and reverse reactions).  Life strives for metabolic disequilibrium.  If things go poorly for a critter and it tragically bites the dust, reactions will reach chemical equilibrium.  Which of the following statements correctly describes that phenomenon?