a grassland receives moderate rainfall & a desert environment receives low rainfall ->  a desert receives low rainfall and a grassland receives moderate rainfall  a desert receives low rainfall and a grassland receives moderate rainfall & rainfall is the amount of rain an area receives ->  a desert receives a low amount of rain and a grassland receives a moderate amount of rain  a desert receives a low amount of rain and a grassland receives a moderate amount of rain & amount is a kind of property with ordered values of low / moderate / high -> a grassland receives more rain than a desert