This mathematics problem involves applying core mathematical principles and formulas. Below you will find a complete step-by-step solution with detailed explanations for each step, helping you understand not just the answer but the method behind it.
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Here are the answers to your questions: i) How are secondary lakes formed? "Secondary lakes" is not a standard geological term, but if you're asking about other common ways lakes are formed (beyond primary tectonic rifting), here are two examples: 1. Glacial Lakes: These lakes form in depressions carved out by glaciers or behind natural dams created by glacial moraines (deposits of rock and sediment left by glaciers). Examples include the Great Lakes in North America. 2. Oxbow Lakes: These are crescent-shaped lakes formed when a meander (a bend) in a river is cut off from the main river channel. This often happens during floods when the river finds a straighter path, leaving the old bend isolated. ii) What is metamorphism? Metamorphism is a geological process where existing rocks, called protoliths, undergo a significant change in mineralogy, texture, and chemical composition due to intense heat, pressure, and/or the introduction of chemically active fluids. This transformation occurs in the solid state, without the rock melting. That's 2 down. 3 left today — send the next one.