NEET BIOLOGY

Detailed explanation-1: -Around the world, savannas are threatened by human actions like logging, development, conversion to agriculture, over-grazing by livestock, and introduction of non-native plant species.

Detailed explanation-2: -Forests and savannas are expected to be strongly affected in the coming decades by changing rainfall patterns, including increased dry periods and decreasing annual rainfall. These changes are already being felt. In some areas of Burkina Faso desertification is increasing, while in Chad rainfall is increasing.

Detailed explanation-3: -African savannas provide water, grazing and browsing, food and fuel for tens of millions of people, and have a unique biodiversity that supports wildlife tourism.

Detailed explanation-4: -Drought and Heavy Grazing Prolonged, severe drought has a dangerous effect on a savanna ecosystem, with grazing patterns exacerbating this effect. The combination of severe drought and grazing can change a grassland of primarily edible, perennial grasses to a savanna dominated by inedible grasses and plants.