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Out of the three, only 1 is acidic because litmus paper turns red in acidic compounds and blue in basic compounds.
nebular hypothesis
The most widely accepted theory of planetary formation, known as the nebular hypothesis, maintains that 4.6 billion years ago, the Solar System formed from the gravitational collapse of a giant molecular cloud which was light years across. Several stars, including the Sun, formed within the collapsing cloud.
There will be mass migration of animals from Location B because of habitat loss.
