Precipitation in the tundra totals 150 to 250 mm a year, including melted snow. That's less than most of the world's greatest deserts! Still, the tundra is usually a wet place because the low temperatures cause evaporation of water to be slow. Much of the arctic has rain and fog in the summers.
Formaldehyde can be toxic, allergenic, and carcinogenic. Because formaldehyde resins are used in many construction materials it is one of the more common indoor air pollutants. At concentrations above 0.1 ppm in air formaldehyde can irritate the eyes and mucous membranes, resulting in watery eyes.ormaldehyde is a naturally-occurring organic compound with the formula CH 2 O. It is the simplest aldehyde and is also known by its systematic name methanal.
Formaldehyde is found in many products such as particle board, plywood, paneling, pressed-wood products and urea formaldehyde foam insulation. Some synthetic fabrics, especially permanent press, shampoos and cosmetics may also contain small amounts.Formaldehyde is also a product of combustion. When you burn materials such as natural gas, wood, gasoline or tobacco, formaldehyde gas is released.o, formaldehyde is still used in many consumer products. Since 1985, Minnesota has regulated the sale of wood products made with urea formaldehyde. Some common building materials have specific product standards that limit the amount of formaldehyde that can be released.