Match the photochemical law with its statement:

Column I	Column II
A. Grotthuss–Draper law	1. Only absorbed light causes reaction
B. Stark–Einstein law	2. One photon excites one molecule
C. Beer–Lambert law	3. Absorbance proportional to concentration
D. Einstein	4. Quantum theory of light

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Which embryonic structure gives rise to the central nervous system in vertebrates?

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Which embryonic structure gives rise to the central nervous system in vertebrates?

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Which is a species:

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Which is a species:

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Linnaeus is associated with:

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Linnaeus is associated with: