Answer:
Theres been multiple variants of the virus that causes CO VID-19 have been documented in the United States and globally during this pand emic. The virus that causes CO VID-19 is a type of coronavirus, a large family of viruses. Coronaviruses are named for the crown-like spikes on their surfaces.When a virus replicates or makes copies of itself, it sometimes changes a little bit, which is normal for a virus. These changes are called “mutations”.
Explanation:
brainliest please?
Answer:
b. Obviously
Explanation:
Cataract surgery <em><u>Obviously</u></em> has become one of the most common and successful operations.
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Natural causes such as old age
