(iv ( (i) Mesosphere (ii) Lithosphere (iii) Atmosphere (e) World Environment Day is celebrated on (i) 10th June (ii) 3rd June (iii) 7th June Man, ant, bear and crow are examples of (i) herbivores (ii) carnivores (iii) decomposers ( State whether the following statements are true of false : (a) The Sun causes changes in environment. (b) All the realms of the Earth affect life or biosphere on land. (c) Herbivores keep the number of carnivores under control by hunting th (d) Food chain controls the number of organisms in an ecosystem. Answer the following questions : (a) What is environment? Mention two of its componets. (b) Define the term 'Ecology'. What are the three elements of biosphere?
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