3. Weather satellites help in sending messages.
4. Step farming is done on hill slopes.
Answers
Answer:
3.
Satellites communicate by using radio waves to send signals to the antennas on the Earth. The antennas then capture those signals and process the information coming from those signals. Information can include: ... where the satellite is currently
4.Terrace farming or step farming is commonly done on the slopes of the hills. It is defined as the farming in which the slopes of the hills or mountains are cut in the form of steps so that the farmer gets enough space for cultivating various kinds of crops.
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3. Weather satellites send information and pictures of clouds, storms and ocean currents which helps to predict the weather. Science satellites send information about outer space.
4. Step farming is done in hilly slopes because it helps in preventing soil erosion. It also helps in preventing the runoff of water which can bring floods in the valley or foot hills.