In the winter, we experience shorter days, earlier sunsets, and longer nights. That is caused because:

The tip of the Earth (the Northern Hemisphere) is pointed toward the sun during Earth's orbit during the summer months, resulting in longer days. Since the Northern Hemisphere is tilted away from the sun during the winter, there are less hours of sunlight and shorter days.

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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.

c.           is the correct answer