Workers in deep mines usually suffer fro...

Workers in deep mines usually suffer from dehydration because

Water is lost due to evaporation

Water is lost due to defaecation

Water is lost in the form of urine

Water is lost along with salts in the form of sweat

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Many visitors to the hills suffer from skin and allergy problems because

Percentage of oxygen is low at high altitudes

Partial pressure of oxygen is low at high altitudes

They exhibit physiological polycythemia

Conifer trees produce a large quantity of wind - borne pollen grains

CO reacts with `O_2` reducing its percentage in air

Haemoglobin combines with CO instead of `O_2` and forms carboxyhaemoglobin

CO affects diaphragm and intercostal muscles

CO affects the nerves of the lungs

angiosperms have fats

endosperm is formed before fertilization

endosperm is not formed before fertilization

it, is diploid