Here's why:
* Grasslands: Savannas are primarily characterized by vast expanses of grasses.
* Scattered Trees: While there are grasses, savannas also have a distinct feature of scattered trees, often acacia or baobab trees.
* Open Canopy: The trees are spaced out, allowing for plenty of sunlight to reach the ground, which supports the grassland ecosystem.
Other phrases that could be used to describe a savanna include:
* Tropical grasslands
* Open woodlands
* Dry forests
Ultimately, the best phrase depends on the specific context and what you want to emphasize. However, "grasslands with scattered trees" is a concise and accurate description that captures the essence of a savanna.