1. With reference to food chain, consider the following statements: 1.Only 10 per cent of the energy is transferred to each trophic level from the lower trophic level. 2. The flow energy takes place ...

Ecological succession occurs when older communities of plants and animals are replaced by newer communities, whereas the ecological pyramid deals with the relationship between the number of primary ...

A survey of a remote Pacific archipelago turned up pristine coral reefs that could offer a “baseline” for measuring the human impact on reefs worldwide, report researchers from the Scripps Institution ...