Day: December 23, 2014
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What is Coral Bleaching ? What are the causes and consequences ?
What are Corals? Coral colonies are made up of hundreds or even thousands of genetically identical individuals called polyps. These polyps have microscopic algae called zooxanthellae living within their tissues. The coral provides the zooxanthellae with the compounds necessary for photosynthesis, which are metabolic waste products of the coral. In return, the zooxanthellae produce oxygen and help…
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Total Fertility Rate and Replacement Fertility Levels ; What happens when developing nations reach replacement level ?
The world’s population is over 7 billion. We , the people of India are a staggering 1.2 billion. Humanity has continued to exist because people have done produced another generation to replace itself. Scientists have figured out how many people ought to be born to keep population stable. This brings the concept of total fertility rate et…