Pollution may be defined as the release into the environment, of chemicals or substances or energy, through man's activities, in such quantities and for such duration, that may cause harm to man or his environment or resources.
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The tadpole and Gish show the following structural adaptations to life in water: • Both a fish and a tadpole have a stream... -
Birds that are carnivores like the hawk, owl and eagle have strong and hooked beaks adapted for killing and tearing the flesh... -
Xerophytes are plants that can Survive in any environment, such as desert, where water supply is scare. They show the followin... -
Marketing information system has a more recent origin than marketing research. Actually, while the first marketing information syste... -
Besides the kidney, the lungs, liver and skin also excrete waste products. The lungs excrete carbon dioxide and water , the wa... -
An earthworm has a segmented body. Each segment has a pair of tubes called nephridia. These are the excretory organs of the earthworm.... -
Let us now examine in detail the types of reference groups influencing the behaviour of consumers. Reference group can be classified in... -
The processes involved in the formation of urine are as follows: • ultra filtration, • selective reabsorption, and • tubular... -
In practically all living organisms, cellular respiration uses oxygen and produces carbon dioxide as waste. These gases enter or leave... -
Gas - Inhaled air - Exhaled Air • Oxygen - 21% - 16% • Carbon dioxide - 0/04% - 4% • Nitrogen - 79% - 79% • Water Vapour - V...