question_answer 38)

    The number and kinds of organism is not constant. How do you explain this statement?

Answer:

                  The number and kind of organism is not constant, because of the following reasonsMechanisms adding new organisms by (i) Sexual reproduction       (ii) Mutation                 (iii) Evolution Mechanisms reducing  the number of organisms are (i) Environmental threats   (ii) Loss of habitat       (iii) Anthropogenic activities