Accommodation for near vision requires:
1. flattening of the lens.
2. contraction of the ciliary muscles.
3. activation of the sympathetic nervous system.
4. increased rounding of the cornea.
5. dilation of the pupil.

Option 2.

Accommodation of near vision requires the contraction of ciliary muscles.

Explanation:

Accommodation is the ability of the eye to adjust it optics thereby focus clear image of the objects on retina at various distance. Accommodation of near vision requires contraction of ciliary muscles. The lens is responsible for accommodation. The lens focuses light rays on retina. The ciliary muscle contract and make the lens to change shape, there by causing objects to appear real or cause accommodation of near vision.

the sun's light combined with the visible wavelenghts form what is called ultraviolet radiation, which are the long waves at the end of a visible light sprectrum.

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bioteacher101

answer: 20 percent

the fish culture has become a developing commercial practice in developing countries which is already prominent in developed countries of the world. the major fish protein demand is being supplemented in developing countries is   fishing to meet the needs of the growing population. therefore, in some developing nations, the percentage of animal protein from fish in the diet can be as high as 20 percent.