Convective Lifting is arguably the most common form of lifting and involves the heating of the Earth's surface such that surface water gets evapotranspirated from the ground and plants.
As the clouds rise, they encounter cooler temperatures and thus cool down and condense into clouds. Higher temperatures mean higher convection.
The Amazon lies on the Equator which receives the most direct sunlight so the surface gets heated a lot. Water therefore collects faster and condenses more over the Amazon which leads to more precipitation over the Rainforest.
