<u>Answer:</u>
<em>Low calcium level in body may cause a condition called hypocalcemia.
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<u>Explanation:</u>
When a <em>person has the condition of hypocalcemia his/her muscles and nerves that are releted to calcium levels in blood</em> will undergo spasms or twitching. This is generally termed as muscular irritability. <em>Muscle cramps in leg and arms are symptoms of hypocalcemia.
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When the fall in calcium levels is sudden then the <em>twitching of muscles</em> will be more evident. Calcium absorption is only possible if there is adequate supply of vitamin D in our body. <em>Thus the levels of calcium and vitamin D should be well maintained to avoid hypocalcemia.
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Answer:
Transpiration is the evaporation of water from the surface of leaf cells in actively growing plants. ... If water loss is greater than water uptake, air bubbles can form in the xylem. Plants reduce water loss by closing their stomata, developing thick cuticles, or by possessing leaf hairs to increase the boundary layer.
There is currently no treatment for inherited colour blindness. Colour filters or contact lenses can be used in some situations to enhance the brightness between some colours and these are occasionally used in the workplace, but many colour blind people find these actually confuse them further rather than help.