<P> Upland habitats are cold , clear , rocky , fast - flowing rivers in mountainous areas ; lowland habitats are warm , slow - flowing rivers found in relatively flat lowland areas , with water that is frequently coloured by sediment and organic matter . </P>
<P> Upland habitats are cold , clear , rocky , fast - flowing rivers in mountainous areas ; lowland habitats are warm , slow - flowing rivers found in relatively flat lowland areas , with water that is frequently coloured by sediment and organic matter . </P>
how a river changes its characteristics when it reaches the lowland
how a river changes its characteristics when it reaches the lowland
warm slow - flowing coloured by sediment and organic matter
warm slow - flowing coloured by sediment and organic matter