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WebThe OPAL Earthworm Guide was produced as a resource for the OPAL Soil & Earthworm Survey and includes an identification key to the 12 most common species of British … WebOPAL Surveys This collection consists of six field work investigations which relate to the curriculum areas habitats, interdependence and adaptation and the environment. Each … list of holidays iit bhu

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WebThe OPAL Earthworm Guide was produced as a resource for the OPAL Soil & Earth-worm Survey and includes an identifica-tion key to the 12 most common species of British earthworm based on the observa-tion of live earthworms, using colour and size as distinguishing features.We regular- WebThis resource, produced by OPAL (Open Air Laboratories), aims to develop an understanding that there are different kinds of earthworms in the environment with … WebThe OPAL and Earthworm Survey Imperial College London Introduction Soil is one of the world's most precious natural resources. It is made up of water, air, minerals and organic matter, and is vital for plant survival and crop production. list of holidays for every day of the year