environment quiz

What can add dissolved oxygen to the water?

• Photosynthesis

• Wave and Wind Action

• Diffusion from the air above

• All of the above

Algae blooms will ____________ the amount of dissolved oxygen in an aquatic system.

• Decrease

• Increase

The higher the temperature, the more dissolved oxygen in water.

• True

• False

Which biome holds the greatest biodiversity?

• grassland
• tundra
• rainforest
• desert

The ability to conserve water is an important adaptation in which biome?

• Coniferous Forest
• Deciduous Forest
• Desert
• Tundra

Abiotic factors are ___________.

• non-living parts of an ecosystem

• living parts of an ecosystem

• things that once were alive, but now are dead

• not important parts of ecosystems.

Which of the following is a biotic factor in an ocean ecosystem?

• the salt content of the water

• the temperature of the water

• the fish in the water

• the oxygen in the water

Which would most likely happen if too many nutrients entered an estuary?

• Nutrients would be used up by the fish and plants, keeping the estuary in balance.

• Algal blooms would lower dissolved oxygen levels, causing fish to suffocate.

• Algal blooms would decrease, leaving few food resources for fish.

• Nutrients would sink to the bottom, increasing soil deposition.

How does eutrophication cause the death of aquatic organisms

• the build up of carbon dioxide in the water

• the lack of nitrogen in the water

• the lack of carbon dioxide in the water

• the lack of oxygen in the water

Which biome is the coldest?

• tundra

• desert

• grassland

• savanna