Stratosphere and Troposphere

Correct Option: B

Stratosphere and Troposphere

Ocean currents

Correct Option: D

Ocean currents

Troposphere

Correct Option: B

Troposphere

Atmospheric layer which reflects radio waves is called lonosphere. The ionosphere is a region of the upper atmosphere, from about 85 km (53 mi) to 600 km (370 mi) altitude, and includes the thermosphere and parts of the mesosphere and exosphere. It is distinguished because it is ionized by solar radiation. It plays an important part in atmospheric electricity and forms the inner edge of the magnetosphere. It has practical importance because, among other functions, it influences radio propagation to distant places on the Earth.

Correct Option: B

Atmospheric layer which reflects radio waves is called lonosphere. The ionosphere is a region of the upper atmosphere, from about 85 km (53 mi) to 600 km (370 mi) altitude, and includes the thermosphere and parts of the mesosphere and exosphere. It is distinguished because it is ionized by solar radiation. It plays an important part in atmospheric electricity and forms the inner edge of the magnetosphere. It has practical importance because, among other functions, it influences radio propagation to distant places on the Earth.

A hot local wind blowing in sahara desert is known as Harmattan. The Harmattan is a dry and dusty West African trade wind. This northeasterly wind blows from the Sahara into the Gulf of Guinea between the end of November and the middle of March. The temperatures can be as low as 3 degrees Celsius

Correct Option: D

A hot local wind blowing in sahara desert is known as Harmattan. The Harmattan is a dry and dusty West African trade wind. This northeasterly wind blows from the Sahara into the Gulf of Guinea between the end of November and the middle of March. The temperatures can be as low as 3 degrees Celsius