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It is defined as the presence of chemicals and particulate in the atmosphere in quantities and pollution that are harmful to human health and environment. It occurs when the concentration of certain substances become high enough to cause the atmospheric environment to become toxic. Air pollution affects the human being very high because every human being inhales about 15-22 kg of air daily and if it polluted it will damage human health considerably.
Example: SO2, CO, Chlorofluoro-Carbon (CFC'S), Nitrogen oxide etc.
Define Role of Iron in Controlling Gene Expression? Iron metabolism is regulated by a complex co-ordinate mechanism. Recent evidence supports specific past-transcriptional mech
What are the vascular bundles? How does configuration of the vascular bundles within the stem differentiate monocots from dicots? The Vascular bundles are segments of xylem and
A female frog has a genetic trait that stops it from producing eggs. How likely is it that this trait will spread by the frog population? Explain your answer. This trait will
Explain Regulation of Water Balance for Cells in the kidneys? Cells in the kidneys respond to low blood pressure by releasing an enzyme called renin, which in turn causes the k
Explain Phylum Cnidaria - Coelenterates? Members of the Phylum Cnidaria and one other group-Phylum Ctenophora (the comb jellies)-are the only two animal phyla that have radiall
What are ions? What are the two types of molecules into which ions are classified? Ions are atoms or substances electrically charged by means of loss or gain of electrons.
The classification was given by Spaulding and is based on the contact with different tissue types to determine whether sterilization or disinfection is needed. 1. Critical item
Give definitions of atomic number and atomic mass and how they relate to protons, neutrons, and electrons in neutral atoms?
Q. Do bacteria cells have a nucleus? In bacteria the genetic material is dispersed in the cytosol and there is no inner membrane that delimits a nucleus.
Who was Charles Darwin? The Charles Darwin was an English naturalist born in 1809 and considered the father of the theory of evolution. By the end of the year 1831, before turn
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