Question

State any two characteristics of barchans.

Answer 1

1. Crescent-shaped: Barchans are moon-shaped dunes with their horns (tips) pointing in the direction of the wind.

2. Migration: They are live dunes that advance steadily in the direction of the prevailing wind, causing them to move over time. This migration can be a threat to desert life, as they may bury vegetation and even settlements.

These characteristics make Barchans easily recognisable, and they are commonly found in deserts like the Sahara.