The dry regions of Karnataka are characterized by:

The correct answer is: D) All of the above.

The dry regions of Karnataka are characterized by tropical dry deciduous forests, tropical thorn forests, and grasslands.

Tropical dry deciduous forests are found in areas with a long dry season and a short wet season. The trees in these forests lose their leaves during the dry season to conserve water. Some common trees in tropical dry deciduous forests include teak, sal, and neem.

Tropical thorn forests are found in areas with an even longer dry season and a shorter wet season. The trees in these forests are adapted to survive