按研究对象的组织层次划分,以下研究内容各属于什么生态学?(可学习后面3页PPT之后作答) 1. How do diving whales select their feeding areas? 2. What factors limit the number of striped mice that can inhiabit a particular area? 3. What factors influence the diversity of tree species that make up a particular forest? 4. What processes recylce vital chemical elements, such as nitrogen (N) within a savanna ecosystem?