A group of students walking through a coastal rainforest in Vietnam observe a large, beautiful tree towering above. The tree is full of orchids, mosses, birds, insects, arachnids, and millions of bacteria, all interacting with the abiotic environment, including the air, soil, and water of the forest. Which of the following terms bests describe this in the entirety of what they are observing? a. community
b. habitat
c. ecosystem
d. Omicrocosm