I would like to have exercises in English
Answer:
Astraphobia, also known as brontophobia, is a kind of phobia characterized by an intense fear of extremely loud but natural noises in the environment. Namely, lightning and thunder.
Answer:
RNA has great capability as a genetic molecule; it once had to carry on hereditary processes on its own. It now seems certain that RNA was the first molecule of heredity, so it evolved all the essential methods for storing and expressing genetic information before DNA came onto the scene.
Explanation:
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The Sun's magnetic field goes through a cycle, called the solar cycle. Every 11 years or so, the Sun's magnetic field completely flips. This means that the Sun's north and south poles switch places. Then it takes about another 11 years for the Sun's north and south poles to flip back again.
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