Answer:
Radio-wave communications signals travel through the air in a straight line, reflect off of clouds or layers of the ionosphere, or are relayed by satellites in space. They are used in standard broadcast radio and television, shortwave radio, navigation and air-traffic control, cellular telephony, and even remote-controlled toys.
Explanation:
Answer:
The best answer would be A. The United States invested in science education and created NASA.
Absolutely true! With the invention of steam power, a new source of energy was formed, and in return paved the way for more machinery to be built using this power.
4th Amendment uses deadly force i believe
