4.1.

4.1.1 Choose the term in brackets to make the sentences correct by underlining:

(Erosion / Deposition) is the primary geological process responsible for the formation of waterfalls.

4.1.2 (Resistant and less resistant rock layers / Decreased precipitation) is/are the factor(s) that play(s) a crucial role in the formation of waterfalls.

4.1.3 In the formation of waterfalls, (Igneous / Sedimentary) rock layers typically erode more slowly and form the waterfall's resistant cap.

4.1.4 The basin or pool of water at the base of a waterfall, created by the erosional action of the falling water is called a (Plunge pool / Lagoon).

Erosion is the primary geological process responsible for the formation of waterfalls. Resistant and less resistant rock layers are the factors that play a crucial role in the formation of waterfalls. In the formation of waterfalls, Sedimentary rock layers typically erode more slowly and form the waterfall's resistant cap. The basin or pool of water at the base of a waterfall, created by the erosional action of the falling water, is called a Plunge pool.

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