Simplify the following text for a Grade 8 native English-speaking person.
Original: The most prevalent biome in South Africa is the grassland , particularly on the Highveld , where the plant cover is dominated by different grasses , low shrubs , and acacia trees , mainly camel-thorn and whitethorn .
Simplified: The most common biome in South Africa is the grassland , mostly on the Highveld . This is where grasses , low shrubs , and acacia trees , mostly camel-thorn and whitethorn are more common then plants .