the correct answer is a delta.
the formation of deltas takes place when a river meets a sea or the lake, at this moment, the speed of water becomes less and it loses the intensity to carry sediment. the sediment gets accumulated at the mouth of the river. some of the rivers leave so much of sediment that even the tides and waves become inefficient in carrying it all through. it accumulates in layers producing a delta. some of the deltas are so big that even humans can live on them.
the given blank can be filled with endothermic reactions.
the endothermic reactions or processes captivates energy from its surroundings, primarily, but will not always be in the form of heat. a reaction, which requires the input of energy that dissociates a bond will always be endothermic. the best examples of endothermic reactions are evaporation of the liquid, melting cubes, melting or solid salts, and others.
answer:the most abundant isotope is ³⁵cl₁₇.since the average atomic mass of cl is 35.45 g/mole, so the most abundant one is that one near this number, ³⁵cl₁₇.³⁵cl₁₇ is found by 75 % and ³⁷cl₁₇ is found by 25 % by a ratio 3: 1.