Final answer:
Aquatic means relating to water. Lakes and oceans are examples of aquatic ecosystems that contain different species living and interacting in bodies of water.
Step-by-step explanation:
Aquatic means relating to water. Lakes and oceans are examples of aquatic ecosystems because they are bodies of water where different species live and interact. Freshwater biomes, such as lakes and ponds, have less than 1% salt, while marine biomes, such as the oceans, have more salt.