9.14: Earth's Oceans- Challenge 3
- Page ID
- 5476
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- 1. A ___ is where algae have used up all the oxygen in the water, so nothing can live.
- dead zone
- 2. Excess nutrients added to a body of water ultimately lead to an oxygen poor environment that results in a ___.
- dead zone
- 3. ___ get washed into the oceans from farms and yards, causing algae to grow.
- Fertilizers
- 4. Plastic trash may contain toxic chemicals like ___ that enter the ocean.
- bisphenol A (BPA)
- 5. Plastics in the ocean break down ___.
- into molecule-sized polymers
- 6. Many types of plastics do not biodegrade, but they may ___, which means they break up in sunlight.
- photodegrade
- 7. The Gulf of Mexico spill in 2010 was caused by ___.
- an explosion on a deepwater oil rig
- 8. Oil companies will continue to go for hard-to-get-at deposits as long as ___.
- people will pay for the oil
- 9. Which oil company was responsible for the oil spill of the Valdez in Alaska?
- Exxon