A group of scientists are studying the microhabitat on the inside of a hollow log. Twice a year, they take samples of the wood and make observations about organisms living in the log. They observe that the types of bacteria and fungi living in the log change over time. The properties of the wood inside of the log also change. Which of the following statements best describes why the types of organisms in the log change over time? A. Different organisms are adapted for different conditions. B. Some organisms are adapted to live in a wide range of conditions. C. Organisms in the log stabilize the conditions in their environment. D. Organisms in the log do not compete for available resources.