Drainage basin - the area of land drained by a river.
Catchment area - the area within the drainage basin.
Watershed - the edge of highland surrounding a drainage basin which marks the boundary between two drainage basins.
Source - the beginning or start of a river.
Confluence - the point at which two rivers or streams join.
Tributary - a stream or smaller river which joins a larger stream or river.
Mouth - the point where the river comes to the end, usually when entering a sea.
Hope this helped :)
<span>The correct answer here is drought. A drought is when there is a shortage of water, due to a long period of time in which there if far less rainfall than would normally be expected in any one area.</span>
Answer:
Sunspots appear over a range of 40-50∘N latitude to 40-50∘S latitude.
Earth's rotation causes air and water in the northern hemisphere to appear to move right and in the southern hemisphere to appear to move left
