5.L.2.1 #2: Schoolnet

In which ecosystem can you find a mix of salt water and freshwater?

• estuaries

• lakes

• oceans

• ponds

Which best describes the differences between an ocean and a lake

ecosystem?

• an ocean ecosystem is brackish water; a lake ecosystem is freshwater

• an ocean ecosystem is salt water; a lake ecosystem is brackish water

• an ocean ecosystem is salt water; a lake ecosystem is freshwater

• an ocean ecosystem is freshwater; a lake ecosystem is salt water

Which best describes the ecosystem of a lake or pond?

• They are aquatic because they are made of land.

• They are aquatic because they are made of water.

• They are terrestrial because they are made of land.

• They are terrestrial because they are made of water.

Due to their fertile soil, grasslands and estuaries are being used for

which purpose?

• agriculture

• fishing

• manufacturing

• tourism

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-5

How are oceans and salt marshes different?

• Salt marshes have deeper water than oceans.

• Salt marshes have shallower water than oceans.

• Salt marshes have more organisms than oceans.

• Salt marshes have more wave action than oceans.

Which two ecosystems contain saltwater organisms?

• lakes and ponds

• oceans and ponds

• estuaries and lakes

• oceans and estuaries

Which best explains how two ecosystems benefit each other?

• Oceans provide water for plants trying to survive in deserts.

• Estuaries provide a safe breeding area for ocean organisms.

• Grasslands provide food for organisms living in oceans.

• Forests provide a hiding place from fires in grasslands.

Tags

NGSS.MS-LS2-2

Which best describes a difference between estuaries and ponds?

• Ponds flow into the ocean and estuaries do not.

• Ponds are affected by tides and estuaries are not.

• Ponds are freshwater and estuaries are brackish water.

• Ponds have salt water and estuaries have brackish water.

Which is a main difference between a grassland and forest ecosystem?

• the amount of trees, as forests have more

• the amount of trees, as grasslands have more

• their location, as only forests are found in North America

• their location, as only grasslands are found in North America

How are estuaries and salt marshes similar?

• They both contain only freshwater.

• They are both larger than an ocean.

• They both have a variety of vegetation.

• They are both unaffected by the changing tides.