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Mycorrhizae is symbiotic association between,
Total organic mass in ecosystem is,
Rhizobium and root nodules of pea have
Detritus food chain in comparison to grazing food chain is
Food chain always starts with,
Zero population growth means
Which is not a green house gas?
Atmosphere of cities is most highly polluted by,
Which is not a biotic component?
After succession, the new invaders are called
__________ begins from bare rocks and sand
Lichens with thick crust and extreme living conditions are found in which stage?
Establishment of woody plants that inhibits growth of most plants is called,
Which is an endoparasite?
Plants and animals replace earlier ones by
Relationship where one organism gets benefit
Bare rocks are habitat of,
Succession starting in marshes is,
Competition between organisms becomes great , living in same
Community is the ecology to describe
Relationship between bacteria and roots of plants is,
Animals feeding on green plants are,
addition of phosphates and nitrate fertilizers in soil leads to
Flow of energy declines from _____________ trophic levels