Benchmark Universe Unit 3 The Past and Future of a Crop

Which detail from the passage, "The Past and Future of a Crop, " supports the idea that corn can produce others types of energy other than through food?

• Corn is used to feed humans

• Corn is widely used to provide livestock with food

• Corn can be processed and turned into ethanol

• Corn produces glucose that can be stored and used as food.

Which sentence from the section "Keep Corn on the Cob- Not in My Car!" suggests a subjective view point?

• America has many energy needs

• Farmers in America grow and produce corn cropds.

• About 10 percent of corn production is used for food.

• Ethanol is causing more problems than solutions.

According to the section "Clean Burning Corn is America's Future, " what is an important reason to use ethanol rather than petroleum?

• It burns faster which makes it more efficient than petroleum.

• It is a cleaner- burning fuel, which means less emissions of carbon are sent into the air.

• It will raise food prices which will cause more people to starve

• It will solve all of America's air pollution problems.

Which sentence from the section "Clean- Burning Corn is America's Future" suggests a subjective view point?

• Americans have to create more investments in alternative fuel sources

• Ehtanol is made from corn

• Corn is a source of different types of energy

• Photosynthesis begins with sunlight and water.

What are different uses of ehtanol and why is it important?

• Ethanol is produced from corn and is abundant in North America

• Ethanol contributes to climate change.

• Ethanol is more expensive than patroleum

• Ethanol is a cleaner source of fuel than patroleum