Tides are twice daily because the Earth rotates through two lunar gravitational bulges, but the local range depends on coastline shape and resonance—Khambhat's funnel-like bay amplifies tides massively while Chennai's open coast dampens them. But honestly, the textbook answer feels too clean; I've seen how much dredging and port construction in Mumbai Harbour changed our local tide patterns over just my degree. Real tides aren't just gravity—they're shaped by what we build on the coast, too.
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