Write the characteristic features of a terrestrial or an aquatic ecosystem.
A terrestrial ecosystem is an ecosystem found only on landforms. There are several types of terrestrial ecosystems, but they mainly differ in: - Average rainfall; - average temperature and the range in temperature over the year; - terrain (mountains versus plains or valleys).
Aquatic ecosystem is an ecosystem in a body of water. Features differentiating aquatic ecosystems are: - substrate type; - water depth; - nutrient levels; - temperature; - salinity; - flow.