Plant life on Pandora is strange and even fantastic. Yet some plants on Pandora bear a striking resemblance to plants on Earth. The diversity of plant life and its range and its size and complexity suggest that, as on Earth, the environment on Pandora acts as a strong force for natural selection. The environmental factors that plants experience on Earth - radiation, water, atmospheric gases, and gravity - are present on Pandora, as well, although their characteristics differ profoundly, as...
