Since 1970, many species of animals have become extinct. The list includes more fish and birds than any other species. Recently, the World Conservation Union has declared the Western Black Rhinoceros to be extinct. In recent years, the population has
decreased from 3000 to just twelve. It is believed that today none are left in the wilds of Africa,
Although efforts were made to protect the Western Black Rhinoceros, it is thought that man has directly caused its extinction by

your parents i think this could be it

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

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