D 2-2 & 2-3 Test

Which aquatic ecosystems are most appropriately described as the “nurseries of the sea”?

• estuaries

• wetlands

• deep oceans

• costal oceans

Which adaptation would best help a lily pad survive in the moving water of a stream?

• long roots

• large leaves

• sweet scent

• white flowers

Reorder the following:

What are the four ocean zones of a marine ecosystem, from most shallow to deepest?

• bathyal

• intertidal

• abyssal

• neritic

Which of the following is the best definition of a wetland?

• water that flows from a higher elevation to a lower elevation

• large body of salt water

• large body of fresh water

• an area of land that is saturated by water at least part of the year

Wetlands are natural parts of watershed systems. In addition to having many natural processes, wetlands can also benefit humans.  Which of the following is a way that wetlands can help humans?

• increase flooding in adjacent towns and cities

• decrease biodiversity where humans live

• increase erosion near shorelines

• protect nearby land from flooding

An estuary is part of a watershed system. Which of the following is the best definition of an estuary?

• water that flows from a higher elevation to a lower elevation

• large body of salt water

• large body of fresh water

• an area of land that is saturated by water at least part of the year

• a mix of salt and fresh water where a river meets the ocean

Which answer choice describes a way in which estuaries benefit humans?

• Estuaries contain coral reefs, where humans can go snorkeling and scuba diving.

• Estuaries provide breeding grounds for many fish, which humans eat.

• Estuaries contain large mammals, which humans eat.

• Estuaries filter the fresh water that humans drink

Which of the following best states how living organisms fit into the water cycle?

• The bodies of living organisms produced all the water on Earth.

• The bodies of living organisms consist mostly of water.

• Living organisms are a primary source of condensation.

• Living organisms are a primary source of precipitation.

Which of the following statements about energy pyramids is true?

• The smallest proportion of organisms are found in the top level.

• The largest proportion of organisms are found in the top level.

• Carnivores are most likely to be found in the bottom level.

• Producers are most likely to be found in the top level.

What element can be changed by lightning into a form that plants can use?

• Nitrogen

• Phosphorous

• Carbon

• Oxygen