End of Unit 5 Ecosystem

Which best compares a lake and an estuary ecosystem?

• They both have plants growing in their deepest water.

• They are both affected by the daily changing of tides.

• They both contain a mixture of salt water and freshwater

• They are both affected by seasonal changes in water temperatures.

How are ponds and lakes similar?

• Both contain salt water.

• Both contain freshwater.

• Both are affected by tides.

• Both are affected by waves.

Which best explains how two ecosystems benefit each other?

• Estuaries provide a safe breeding area for ocean organisms.

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

• Grasslands provide food for organisms living in oceans.

• Forests provide a hiding place from fires in grasslands.

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

• estuaries

• lakes

• oceans

• ponds

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

Which two ecosystems provide most of the food for the world’s population?

• ponds and lakes

• estuaries and forests

• grasslands and oceans

• salt marshes and deserts

Which characteristic would allow many fish to move from ocean to estuary?

• Both ecosystems contain only freshwater.

• Both ecosystems contain sufficient amounts of salt.

• They are both very deep and have cold temperatures.

• Both ecosystems have very little plant life because light cannot reach deep areas.

How are grasslands and estuaries most alike?

• They both support marine life.

• They both have wide open areas.

• Lightning strikes easily start fires in both.

• Trees prevent growth of smaller plants in both.

Which characteristic differs the most between a forest and a grassland ecosystem?

• the amount of salt

• the amount of trees

• the amount of sunlight

• the amount of organisms

Which ecosystem most likely receives the greatest amount of precipitation?

• estuary

• grassland

• rain forest

• salt marsh