The chemical make-up of a rock refers to its composition. Your answer is correct. This is because geologists determine the amount of occurring inorganic solids and chemical composition in minerals the make-up a particular kind of rock. The variety of arrangements of chemical elements in a rock determine its basic or complex composition.
The Cataracts of the Nile are shallow lengths (or white water rapids) of the Nile River, between Aswan and Khartoum, where the surface of the water is broken by many small boulders and stones jutting out of the river bed, as well as many rocky islets. In some places, these stretches are punctuated by whitewater
Hope this helped
M = - 3
16m - 12 - m + 5 = - 52
16m - m = - 52 + 12 - 5
15m = - 45
m = - 45/15
m = - 3 ✔️
