Final answer:
The Congo river system includes the lush and species-rich Congo Basin rainforest, tropical wet forests with thick canopies, and areas of tropical dry forests, but faces threats from human activities.
Step-by-step explanation:
The Congo river system is surrounded by the remarkably biodiverse tropical rainforest, known as the Congo Basin rainforest. This expanse of forest is considered the world's second-largest tropical rainforest, following the Amazon. The Congo river system supports various types of forests including tropical wet forests characterized by high species diversity and thick canopies as well as Tropical and sub-tropical grasslands, savannas, and shrublands. The region encounters substantial rainfall, contributing to the deep canopies and dense undergrowth. The Congo Basin has also been recognized for containing regions of tropical dry forests. Sadly, human activities such as logging, agriculture, and conflict have led to a loss of these invaluable forests, affecting countless species that rely on these habitats.