Theoretically, which two of the following present the richest potential sources of silica?

1.  marine sediments consisting of foram tests

2.  marine sediments consisting of diatom cases (valves)

3.  marine sediments consisting of radiolarian shells

4.  marine sediments consisting of dinoflagellate plates

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#Question id: 9275

#XL - R Botany

The colour of carrots, is due to;

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#Question id: 9275

#XL - R Botany

The colour of carrots, is due to;

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#Question id: 9276

#XL - Q Biochemistry

The carotenoid b-carotene, whose structure and absorption spectrum at,

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#Question id: 9276

#XL - R Botany

The carotenoid b-carotene, whose structure and absorption spectrum at,

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#Question id: 9277

#XL - Q Biochemistry

The light energy absorbed by the carotenoids is transferred to chlorophyll for photosynthesis; because of this role they are called

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#Question id: 9277

#XL - R Botany

The light energy absorbed by the carotenoids is transferred to chlorophyll for photosynthesis; because of this role they are called