The embryo, endosperm and seed coat.
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Specular reflection, or regular reflection, is the mirror-like reflection of waves, such as light, from a surface
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Darwin's greatest contribution to science is that he completed the Copernican Revolution by drawing out for biology the notion of nature as a system of matter in motion governed by natural laws. With Darwin's discovery of natural selection, the origin and adaptations of organisms were brought into the realm of science