A man can read the number of a distance bus clearly but he finds difficulty in reading a book; from which defect of eye is he suffering?what is the reason for this type eye defect? what type of spectacle lens should be use to correct the defect? draw a ray diagram to illustrate how this helps him to see clearly?
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the environment is consist of biosphere lithosphere, hydrosphere and atmosphere it's chief components are soil, air, water, organisms and solar energies. . . . . . . . . . .
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the regions of the surface and atmosphere of the earth or another planet occupied by living organisms.
2.
an artificial structure enclosing a self-contained ecosystem or ecosystems.
"the elliptical domed biosphere is the largest single-span glasshouse in the world"
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