Question

Two states "A" and "Bº conducted competitive examinations for other state candidates. No of candidates appeared in both states are same. In state "A", 6.35%
candidates got selected while in state "B", 7.85% candidates got selected with 120 more candidates got selected than State "A". Number of candidates appeared
from each state is

9000
7500
8000
8500​

Answer 1

Explanation:

Bacteria (and archaea) are hardy creatures. They thrive in hot, cold, salty, acidic and alkaline environments in which most eukaryotes would perish. Despite this, they have a bad image: after all, bacteria cause many diseases in humans.

It is in aquatic habitats that the effects of acid rain are most obvious. Acid rain runs off the land and ends up in streams, lakes and marshes - the rain also falls directly on these areas. As the acidity of a lake increases, the water becomes clearer and the numbers of fish and other water animals decline

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