Answer:
When a disease is acute, it will be a short duration. It may be severe and impair normal functioning. They also come on rapidly, and are accompanied by distinct symptoms that require urgent or short-term care, and get better once they are treated.
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Volcano eruptions, hurricanes, and forest fires are all examples of natural disturbances which can lead to succession.
Of these specific types of mutations, they can be categorized into beneficial (helpful), less favorable (harmful), and non-effective (neutral) mutations. so all of the above.
Mutation caused by such base substitution is called as a nonsense mutation.