If the dew point is below freezing, it is referred to as the frost point . This substance is a chlorinated hydrocarbon that has been widely used as a pesticide . Some countries have banned the use of this chemical because of environmental damage. Dieback Drastic reduction in the size population that occurs when its numbers exceed the carrying capacity of its habitat. Diffused Solar Radiation Solar radiation received by the Earth's atmosphere or surface that has been modified by atmospheric scattering .
Process cause the beam of traveling radiation to become less intense.
Dioxins Group of about 75 different toxic chlorinated hydrocarbon compounds produced as by products in chemical reactions involving chlorine and hydrocarbons. This compounds are toxic . Diploid Cell that contains two sets of chromosomes . Also see haploid . Direct Solar Radiation Solar radiation received by the Earth's atmosphere or surface which has not been modified by atmospheric scattering .