Answer:
1 in.
Explanation:
The U.S. Navy has certainly established regulations concerning the way individuals wear uniforms and collar devices. Uniforms for officers and enlisted staff are different, and their regulations and requisites are different as well. Also, there are more divisions regarding officers, with distinguished rules for uniforms, depending on whether they are line officers or staff corps.
Answer:
Unique physical appearance, behaviour and intelligent mind.
Explanation:
Humans are significant in the vast universe because of their unique physical appearance, behaviour and mind. Humans are the most powerful social animals on the planet of earth due to their intelligent minds which able them to formed certain technologies which help them to find out the life on other planets which is farther about millions of kilometers from the earth. There is no life on other planets except planet earth so that's why humans are significant in the vast universe.