Question

3. Lack of vitamin C in diet causes
4. Silk fiber was discovered in china about
5. Deficiency of vitamin A causes
6.
Percentage of water covered on the earth surface.
7. Which person first attempt to measure the speed of light​

Answer 1

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1. Lack of vitamin C in your diet can lead to a condition called scurvy. Symptoms of scurvy include easy bruising, easy bleeding and joint and muscle pains.

(Scurvy) ans.

2.His Ling Shi was first person to discover silk as weavable fibre in the 27th century BC. ( 27th century)ans

3.Vitamin A deficiency can result from inadequate intake, fat malabsorption, or liver disorders. Deficiency impairs immunity and hematopoiesis and causes rashes and typical ocular effects (eg, xerophthalmia, night blindness). Diagnosis is based on typical ocular findings and low vitamin A levels.( Diagnosis)ans.

4.About 71 percent of the Earth's surface is water-covered, and the oceans hold about 96.5 percent of all Earth's water. Water also exists in the air as water vapor, in rivers and lakes, in icecaps and glaciers, in the ground as soil moisture and in aquifers, and even in you and your dog.(71%) ans.

5.Ole Roemer and the Speed of Light. Part of the Cosmic Horizons Curriculum Collection. In 1676, the Danish astronomer Ole Roemer (1644–1710) became the first person to measure the speed of light. Roemer measured the speed of light by timing eclipses of Jupiter's moon Io. ( Ole Roemer)ans.

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