Need asap a man named alexander graham bell received a patent for his telephone invention in 1876. today, many americans carry a cell phone around with them. define patent law and describe how patents encourage competition.

Patent law is the field of law by which inventors are given exclusive right to their inventions/ideas.

This enables the inventor to solely profit from their invention.

industry had made the u.s. the richest nation in the world at this time. the second industrial revolution caused growth in industry and transportation, which allowed increased trade between nations. click to let others know, how is it

two jet streams that directly affect the formation of weather in the continental part are a polar jet and a subtropical jet. they are responsible for the transportation of weather systems, which directly affect people. the polar front is the boundary between cold air from the north pole and warmer equatorial air. both the polar jet and the subtropical jet blow from the west to the east, and follow the boundary between cold and warm air.

the strongest jet streams are polar jets, while subtropical jets are somewhat weaker.

the right answer is c. the polar jet stream is generaly stronger than the subtropical jet stream.