Unlock Elite Access: Level Up Your Preparation with Exclusive Content

Geography Optional 300+ Score Pack · Model answer

What is “Base level”? Explain the types of base level.

  • UPSC 2013
  • Oceanography

Base level is the lower limiting surface below which a stream, glacier, or wave cannot erode the land it flows or acts upon — the level toward which all subaerial and marine denudation ultimately works.

You are reading the opening of the model answer. The full answer is part of the Geography Optional 300+ Score Pack.

What the full answer covers

  • The Concept and Its Working Mechanism
  • General or Ultimate Base Level
  • Local and Temporary Base Levels
  • Base-Level Change and Landform Response

Unlock this answer and 800+ more

  • 820 solved PYQ model answers (2013–2026), Paper I and Paper II
  • Topic-wise across all 20 syllabus units
  • 20 PYQ Pattern Analysis & Strategy reports, one per unit
  • Diagrams and maps drawn inside the answers, where you would draw them
  • 500 days of access from the day you enrol, on phone, laptop or tablet

₹1,770₹2,50029% off

Get Geography Optional 300+ Score Pack @ ₹1,770 →

One-time payment · No subscription · Instant access · UPI, cards, RuPay