Because vitamins carry out various functions in the body, deficiency of different vitamins can have varied effects on tge body. the primary role of vitamin d in the body is blank, and its deficiency may result in blank. 1. a. maintaining healthy eyesight. b. calcium absorption. c. connective tissue repair. 2. a. poor wound healing. b. night blindness. c. rickets.

1. (B). calcium absorption.

2. (C). rickets.

Explanation:

Vitamins are essential biomolecules, required by organisms in small quantity to perform proper body functioning. Vitamin D is mainly responsible for bone formation and bone health as plays major role in absorption of calcium ions.

Vitamin D deficiency can leads to rickets, characterized by soft and fragile bones. Individuals with rickets have higher risks for muscle spams and bone fractures.

Thus, the correct answer is for first blank is 'option). B' and for second blank is 'option). C.'

the correct answer is - d. china has a large and growing population.

the fact that china has a large (the biggest) population, and it is still growing, doesn't hinder the agriculture production in the country. in fact, it can for increased production in the agriculture, since there's more labor force, as well the sheer mass of people produces lots of scientists that come up with new inventions as to how to improve this sector. nice example is the inner mongolia region in china, in general dominated by the gobi desert, but few scientist came up with a nice idea as to how to make the region productive by using plants that are very resistant to droughts, so lots of people have been employed, and the region is becoming greener and greener each year, and the production of food in this region is also increasing.