Coal is burned to get energy. By burning coal, green houses gases like carbon dioxide, nitrogen oxides and suphur oxides are produced.
Rest of the energy sources given in the option are clean energies.
Answer is A.
I found this using the app Socratic. When I took physics in high school it helped me so much.
Answer:
Social psychologists utilize experimental techniques to study how people are influenced by groups. Health psychologists rely on experimentation and research to better understand the factors that contribute to wellness and disease.
Explanation:
Since force is mass*acceleration,
F = 70kg * 9.8 m/s
<span>B. because they cannot make light rays converge</span>
