Aquatic Ecosystems 1

Which is a mix of freshwater and saltwater?

• ocean

• lake

• estuary

• stream

In which ecosystem would this organism most likely live?

• stream

• lake

• ocean

• tropical rainforest

Tags

NGSS.MS-LS2-1

In which ecosystem would this organism probably be found?

• lake

• river

• stream

• ocean

In which ecosystem would this organism probably be found?

• ocean

• tropical rainforest

• desert

• river

Tags

NGSS.MS-LS2-1

Which of these is a saltwater ecosystem?

• lake

• stream

• ocean

• river

Most river water eventually flows into ---

• a stream

• the ocean

• the rainforest

• a desert

Tags

NGSS.MS-ESS2-4

What is one reason people build dams on rivers?

• to stop fish from going upstream

• to create electricity

• to send water to the desert

• to build homes on the river

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS3-4

NGSS.MS-ETS1-1

In what way is building a dam harmful to the river ecosystem?

• it causes the river to dry up

• it stops plants from growing

• it blocks the migration of fish

• it causes the water to become too cold

Tags

NGSS.MS-ESS3-3

NGSS.MS-LS2-4

NGSS.MS-LS2-5

What is freshwater?

• bottled water you buy in a store

• water that comes from a water fountain

• water with no salt content

• water that comes from clouds

Which is a difference between a lake and a river?

• a lake constantly moves and a river doesn't

• a lake flows into the ocean and a river doesn't

• a river constantly moves and a lake doesn't

• a river has fish, but a lake doesn't