Exam 32: Restoring the Range: the Key to Recovering the Worlds Grasslands May Be a Surprising One

Infographic 32.5 -Use Infographic 32.5 to describe the production of grain ethanol and cellulosic ethanol. Why is it more challenging to produce ethanol from plants with high cellulose content compared with producing it from grain?

Which trade-offs of traditional biofuels, like ethanol produced from corn, can be addressed by using algae as a biofuel source?

Although it is clear that alternative energy sources such as bioethanol and biodiesel are reducing fossil fuel usage, ___________ is also a key strategy to reducing our dependence on fossil fuels.

Which of the following is a challenge faced when making biofuel from algae?

_____________ is a term used to explain a biofuel disadvantage that reduces the contributions made from forests and grasslands to ecosystem services.

One way to improve energy return and reduce the amount of greenhouse gases typically released by traditional monoculture fuel crops is to use LIHD grassland plants. What does LIHD stand for?

Which of the following is NOT an advantage of using biofuels as an alternative energy source?

What are biofuels, and what are potential biofuel sources?

Infographic 32.3. -Refer to Infographic 32.3. Use the data from the energy return on energy investment comparison graph to determine which crop offers the highest net energy return (output - input).

Which of the following is(are) predicted to generate the most oil per acre in biodiesel production?

Which of the following is the best option in terms of being environmentally friendly?

Infographic 32.3. -Refer to Infographic 32.3. Use the data from the reduction of greenhouse gas emissions by biofuels graph to describe how emissions from biofuels compare with that of gasoline. Also, how do emissions compare between current biofuels and LIHD biofuels?

Which of the following is NOT a benefit of switching from corn ethanol to cellulosic ethanol?

Explain the outcome of David Tilman's research and what it meant for biofuel crops.

Which of the following is a beneficial characteristic of using crops such as switchgrass to produce cellulosic ethanol?

Driving habits that maximize mileage include all of the following EXCEPT:

Cellulose is complex and difficult to break down. Which of the following is NOT a method currently being used to tear apart the strong chemical bonds in cellulose?

Choose the form of biomass that is easiest to ferment into bioethanol.

Which form(s) of biomass is(are) burned directly for energy?

Which of the following is CORRECT regarding indirect biomass energy?