Why do some appliances not have an earth wire?

a. they are grounded

c. they do not conduct electricity

b. they have double insulation

d. they are unsafe?

Why do some objects seem closer then they are?

A star is thought to be born when a. a protostar reaches a temperature high enough for nuclear fusion to begin. b. a red giant collapses on itself and becomes a black hole. c. pressure within a protostar becomes so great that a supernova occurs. d.

Which european country has the longest coastline?

What is solar system

Which type of mining is likely the least harmful to the environment? a. surface mining b. placer mining c. subsurface mining d. none of the above

What types of areas are created by sinking, dry air at 30 degrees north or south latitude?

The us congress passage of the Homestead act in 1862 can be considered a pull factor that caused people to migrate to the us

Name the river that forms a border between the states of washington and oregon

Match the city in column 1 to its description in column 2. A. Shenzhen B. Tianjin C. Nanjing D. Guangzhou Located near Beijing; has agriculture and manufacturing. Former capital of China with rich history and culture; large manufacturing center.

Mengapakah delta terbentuk di muara sungai