Chemical composition and physical properties
<span>An important prelude to a greeting or opening line is often eye contact.</span>
<span>Earth rotates around its axis and also revolves around the Sun. Rotation is the motion that causes day and night. Earth completes one full rotation every 24 hours. The part of the Earth that faces the Sun has day and the other part has night.</span>
B. They are used for display, in combat and in defense against enemies.
