3. To spot words and sentences that don't row well in the essay
The first condition of equilibrium states that for a body to be in equilibrium, the vector sum of all the forces acting on that body must be zero<span>. Hope that helps you.</span>
Answer is B already took the test and got it right
Answer:
A. They also help the environment by refreshing the air and by reducing smog and effects to the ozone layer.
Explanation:
The author makes a claim that environment is refreshing by the air and the effects on ozone layer are reduced. This statement is not supported by the evidence. The ozone layer is polluted by the environment pollution. The pollution created by humans is also affecting the air which ultimately pollutes the ozone layer.
