Question 1:
- One of the reasons that nutrients in a vegetable patch might be considered abiotic is that they are mostly obtained from the soil.
Question 2:
- Of the following factors that impact biodiversity, a micro-effect would be when a stand of aspen trees dies and decays, leaving a clearing in the forest.
Question 3:
- Ecology needs to study the biotic and abiotic elements in order to study the ecosystem.
Question 4:
- An impact that the brown tree snake has on the ecosystem in Guam is that the bird population, which fed on insects, has decreased drastically.
Question 5:
- The difference between small, controlled lab experiments and ecosystem-scale experiments include the applicability of the results to real-world scenarios and the number of variables considered.