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Q. Why is waste considered one of the major environmental issues?
The environmental problem regarding waste worsens with industrial development and the global growth of consumption societies in the 20th and 21st centuries, factors that cause the immense volume of residuals produced by mankind in the last decades. The amplified waste generation elevate the issue about what to do with waste since nature isn't able to degrade and resorb with adequate speed and efficiency most of the residuals. Consequently the various types of waste accumulate, polluting the environment and creating danger to humans and nature (The present destination of waste has been public waste depositories where the waste volume is compressed and buried underground, an environmentally risky method and another process has been incineration, with the grave consequence of causing air pollution).
what are the excretory organs of birds
Cutaneous respiration in earthworm. The respiration performed by the skin is called cutaneous respiration In earthworm skin is the only organ of respiration. The skin
Is crossing over important for the diversity of biological evolution? Sexual reproduction and recombination of linked genes (crossing over) are, with mutations, the main instru
Which one of the following is one of the characteristics of a biological community? 1. Stratification 2. Natality 3. Mortality 4. Sex-ratio Stratification
vulture undergo which type of nutrition
Q. Hutchinsons System of Classification? John Hutchinson, a renowned British Botanist proposed 24 phyletic dicta or principles and based on these dicta he published a phylogene
Q. What is ancylostomiasis? The Ancylostomiasis is a disease caused by the Necator americanus or Ancylostoma duodenale both hookworms belonging to the nematode phylum (roundwor
Explain Procedure for Isolation of Pure Culture? Now carry out the exercise following the steps enumerated herewith. 1. Label the name of the organism on the bottom of the p
What is the classification that divides orders? Orders are divided into Families. The hierarchy of classification of living things most usually used is, from broadest to nar
Q. What are the major human diseases caused by virus? Among diseases caused by virus are common cold, variola (considered eradicated nowadays), mumps, measles, rubella, AIDS, t
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