Symbiosis Evolution (Biology) 2 Legumes 2 Nitrogen 2 Nitrogen-fixing microorganisms 2 Nitrogen-fixing plants 2 Agricultural pests 1 Algae 1 Animal Ecology 1 Animal behavior 1 Animal nutrition 1 Animal-plant relationships 1 Aphidoidea 1 Aphids 1 Behaviour 1 Behaviour (Wild Animals), (New March 2000) 1 Biochemistry 1 Biological Control 1 Biological control 1 Biological control agents 1 Biological development 1 Biological evolution 1 Biology 1 Biotic communities 1 Chemical control 1 Chemical ecology 1 Cotton 1 Cucurbitaceae 1 Decision analysis 1 Developmental biology 1