Discovery Ed. Ecosystems Review

1. _________________is a land ecosystem.

• An estuary

• A volcano

• A pond

• A grassland

2. Which of the following is a land ecosystem?

• a pond

• a river

• a tundra

• an ocean

3. Desert, tundra, forest, rain forest, and grassland are Earth's ____________

• land ecosystems

• marine ecosystem

• communities

• populations

4. How are land ecosystems defined? They are defined by their_________

• temperature and nonliving things

• precipitation and wind

• water, rocks, and air quality

• climate, terrain, and species

5. Which ecosystem has frozen soil for most of the year and plants with short growing seasons?

• desert

• tundra

• coniferous forest

• deciduous forest

6. What are examples of living and nonliving features of a coniferous forest?

• pine tree and air

• penguin and ice

• cactus and sand

• crab and saltwater

7. What can change gradually over time in a land ecosystem?

• current

• salinity

• terrain

• magma

8. Which event can suddenly and rapidly change the terrain of an ecosystem?

• lunar eclipse

• solar eclipse

• earthquake

• season change

9. Which event can suddenly and rapidly change the terrain of a rain forest?

• solar eclipse

• humans clearing the land

• blizzard

• tropical storm

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

• tundras

• oceans

• deserts

• grasslands