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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.
Q. What are the tissues that form the skin in vertebrates? The skin of vertebrates is made of epidermis is an external layer of epithelial tissue and dermis a layer of connecti
Q. Are there non viral hepatitides? The Hepatitis is a generic name for inflammation of the liver and there are bacterial hepatitides, for instance, in lepstopirosis, and toxic
Spinal cord The elongated part of CNS that runs downward in the spinal canal as continuationof medulla oblongata is called spinal cord. The functions of the Spinal Cord are
Of which type of tissue is the heart made? How is this tissue oxygenated and nutrified? The heart is made of striated cardiac muscle tissue. The heart muscle is known as the my
in natural vegetative propagation which structure gives rise to new individuals?
Microfilaments comprise of the proteins The microfilaments comprise of the proteins, actin and myosin, the same contractile proteins that are found in skeletal muscle cells. Si
Carbon paper leaf prints Cover the vein side of a leaf with a very thin layer of lard or vaseline. Place the greased leaf vein side up on various layers of newspaper and cover
What is Carbohydrates? Carbohydrates : Carbohydrates function mainly as immediate sources of energy, stored energy such as starch, and structural components of cells. Carbohyd
Which of the following is not true regarding the immune response? Answer The immune response uses chemical and phagocytic cells to destroy foreign cells. Once initiated, the immune
Explain Precautions for Gram Staining of Bacterial Cultures? 1. Heat fix the smear, otherwise cells would be washed off. 2. Fresh 24 hrs old culture should be used. Gram var
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