Major shifts, that is shifts in the paradigms, are not very frequent - they would make scientific research unstable, as any result of a smaller study could be made invalid by a paradigm shift,
minor changes however are quite common - basically every scientific study adds to the common knowledge and this also can be considered a minor change.
Therefore the best answer is
<span>Major
shifts in scientific views very rarely occur, but minor modifications
of prior knowledge are continually made based on new research.</span>
Threat is defined as the attempt to inflict injury or punishment on someone. This involves the risk of being involved in different kinds of damage. Threat includes different kinds of elements and these are surprise, significant dates, means of attack, target of attack, and also ADVANCED KNOWLEDGE OF THE COMMUNITY RESPONSE.
Answer:
C. Salt was able to preserve meat before the invention of
