<span>Viewing of the behavior of groups in a systematic way is known as sociological perspective.
Sociology views provide us with different perspectives which helps us to view social world. Sociology has three major theoretical perspectives which include functionalist perspective, symbolic interactionist perspective, and conflict perspective.
Different perspectives offer a variety of explanations on human behavior and social world.</span>
Answer:
The heart valves
Explanation:
The heart valves prevent blood from flowing in the wrong direction in the heart. The valves are held in the proper place because of the chordae tendinae.
B: Black body
b: brown body
Bb+Bb= BB, Bb, Bb, bb