How have humans contributed to desertification in southeast asia?

desertification: the process of turning more areas into desert.

The biome pictured above is found in areas such as kenya and south africa. the land is grass-covered with very few trees and gazelles and other grazers are common here. why does this biome have a low population of trees? a) large grazing animals destroy the trees. b) it is a deforested rainforest with poor soil. c) it has high temperatures and low precipitation. d) it has a long rainy season followed by flooding.

Why is it essential to operationally define the variables in a study?

The medium that carries message signals from senders to receivers of communication is