GR. 7 CH. 17 TEST: THE EARTH'S ECOSYSTEM

1. An ecosystem based on salty water

• Estuary
• Marine
• Zooplankton
• Sargassum

2.Describes nonliving factors in the environment

• Biome
• Conifer
• Abiotic
• Diversity

3. A small stream of river that flows into a larger one

• Wetland
• Swamp
• Tributary
• Marsh

4. The zone of lake or pond below the open-water zone, where no light reaches

• Open-water zone
• Deep-water zone
• Littoral zone
• Tributary

5. Very small animals that, along with phytoplankton they consume, form the base of the oceans' food web

• Phytoplankton
• Zooplankton
• Sargassum
• Estuary

6. A measure of the number of species an area contains

• diversity
• abiotic
• biotic
• conifer

7. An area where fresh water from streams and rivers spill into the ocean

• marine
• Saragassm
• phytoplankton
• estuary

8. A large region characterized by a specific type of climate and certain types of plan and animal communities

• abiotic
• biotic
• diversity
• savanna

9. The zone of a lake or pond that extends from the littoral zone across the top of the water and that is only as deep as light can reach through the water

• littoral zone
• open-water zone
• deep-water zone
• wetland

10. A treeless wetland ecosystem where plants such as cattails and rushes grow

• littoral zone
• open-water zone
• deep-water zone
• marsh