Grade 5 | Science | Unit 3 - Concept 1 - Lesson 5 - Aquatic Ecosystems скачать в хорошем качестве

Grade 5 | Science | Unit 3 - Concept 1 - Lesson 5 - Aquatic Ecosystems

Welcome dear students! we are going to compare between some characteristics and species (living organisms) that live in three different aquatic systems which are: ponds, streams and oceans. Ponds • Type of water: They have fresh water. • Water movement: They have still water. • Species live in ponds: There are different living organisms that live in ponds such as: • Some plants like water lilies. • Some types of worms. • Salamanders • Frogs Streams • Type of water: They have fresh water. • Water movement: They have running water, where water in streams is cool and flows fast. Species live in streams: There are different living organisms that live in streams such as: • Catfish • Salmon (Trout) Oceans and seas • Type of water: They have salt water. • Water movement: Water of oceans and seas is constantly moving in the form of waves that crash onto the shore. • Species live in oceans: There are many living organisms that live in oceans and seas such as: • Kelp • Dolphin • Starfish • Flounder fish (like Moses fish) Notes 1. Oceans and seas environments include many smaller ecosystems. 2. Ocean water circulates around the world in patterns called ocean currents. 3. An example of the interaction between biosphere and hydrosphere in the previous aquatic ecosystems is the catfish (biosphere) that live in cool flowing water (hydrosphere), where they find everything that they need to survive. #Science_Grade5 #mrraoufashraf #AquaticEcosystems #WaterEcosystems #MarineEcosystem #FreshwaterEcosystem Mr. Raouf Ashraf