Interacting Earth Systems

How is an estuary ecosystem different from an ocean ecosystem?

• An estuary ecosystem has lower salinity levels.

• An estuary ecosystem has higher salinity levels.

• An estuary ecosystem has the same salinity levels.

• An estuary ecosystem has doesn't have salinity levels.

What were estuaries before they flooded?

• lakes

• river basins

• rivers

• oceans

What will form at the edge of the water where the water is shallow?

• lakes

• oceans

• highlands

• wetlands

______ is different from the tundra because it contains running water with varying salinity levels.

• A lake

• An estuary

• An ocean

• A river

Why does tuna live in an ocean ecosystem and not in a grassland ecosystem? A tuna lives in an ocean ecosystem and not in a grassland ecosystem because ______.

• monkey is adapted to live in the saltwater

• tuna will not live in the saltwater

• tuna is adapted to live in the freshwater

• tuna is adapted to live in the saltwater

Tags

NGSS.MS-LS4-4

Many organisms in water ecosystems exchange gases with the______.

• water

• air

• oxygen

• carbon dioxide

A pond and a river are both water ecosystems, but a pond does not have________.

• fish

• water

• currents

• frogs

Which of the following cover most of the earth and are large enough to contain many ecosystems?

• oceans

• land

• ponds

• rivers

Tags

NGSS.MS-ESS2-1

Fresh water does not contain...

• frogs

• fish

• salt

• water

Fresh water is a ____________ resource.

• high

• low

• renewable

• non

Tags

NGSS.MS-ESS2-4