The answer to the question is A
A vector has a size and a direction. The size is called the magnitude of the vector.
Answer:
a wave vibrating at right angles to the direction of its propagation.
Explanation:
Troposphere. The troposphere is the lowest layer of our atmosphere.
Stratosphere. The infamous ozone layer is found within the stratosphere.
Mesosphere. Most meteors burn up in the mesosphere.
Thermosphere. Many satellites actually orbit Earth within the thermosphere
Exosphere. Considered to be the actual "final frontier"
Ionosphere. The electrically charged atoms and molecules that are formed in this way are called ions, giving the ionosphere its name
Navigators used astrolabes to calculate positions of the sun and stars.
