Options are:
(A). water cycles;
(B). Greenhouse gasses;
(C). plant cycles;
(D). Electrical energy;
(E). sleep cycles;
(F). heat or cold;
(G). Diurnal cycles;
(H). Temperature changing;
Given those answer options, answer the question: Fact 1: Plants detect and respond to the daily cycle of light and darkness. Fact 2: Diurnal cycles Diurnal cycles are the daily cycles of light and darkness. Given the two facts above, plants detect and respond to what?
A:
(G).