A, the angles at which the sun rays strike the Earth.
The transformation does<span> not change the size or shape of the figure Therefore, the</span>transformation appears to be a rigid motion<span>. A ^ C A' c. The </span>transformation<span> changes the size of the figure. Therefore, the </span>transformation does<span> not </span>appear to be a rigid motion<span>.</span>
It's becasue human populations are concentrated in areas that are lacking proper resources.
The answer is: waterfalls can usually be found wherever there is lots of erosion or where there is steepness in the river's channel.