Answer:
Two equal and opposite parallel forces not acting along the same line, form a couple. A couple is always needed to produce the rotation.
For example, turning a key in a lock and turning a steering wheel.
Answer:
Though you have not gave the choices, I do believe it is “testing”
Explanation:
Peer review is important because it is used by scientists to decided which results should be published in a scientific journal
Answer:
lentic zones because they do not move they are stagnant water examples are ponds, swap, dams.
