Ethanol from sugarcane has a medium net energy yield, while ethanol from corn has a low net energy yield. Why might this be the case? The energy input for growing corn is lower than that for sugarcane. The energy input for growing sugarcane is lower than that for corn. The EROI for corn ethanol is higher than that for sugarcane. The net energy ratio of corn ethanol is negative. Corn ethanol is not a renewable energy source.

Ethanol from sugarcane has a medium net energy yield, while ethanol from corn has a low net energy yield. Why might this be the case? The energy input for growing corn is lower than that for sugarcane. The energy input for growing sugarcane is lower than that for corn. The EROI for corn ethanol is higher than that for sugarcane. The net energy ratio of corn ethanol is negative. Corn ethanol is not a renewable energy source.

Nutrition Now

8th Edition

ISBN:9781337415408

Author:Brown

Publisher:Brown

Chapter4: Understanding Food And Nutrition Labels

Section: Chapter Questions

Problem 8RQ

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There are wastes of four fruits peels; apple, orange, banana, and pineapple were used for this experiment. The percentage of biomass produced and moisture content were calculated by using the given formulas. It is given that the weight of each substrate is equal to 40 grams. The biomass produced is maximum in apple peel followed by banana peel, orange peel, and pineapple peel ( observation 1) and banana peel has highest moisture content followed by orange peel, pineapple peel, and apple peel (observation 2). QUESTION: Please give the clear explanation for both observations and justify your answer.
As scientists research and develop biofuels, they are faced with many tradeoffs. A plant's usefulness for biofuels depends on how much energy can be collected from the plant matter. In addition, growing plants on a large scale requires energy—such as the gasoline and power needed to run tractors and other harvesting equipment or the energy needed to create and distribute fertilizers and pesticides. An efficient biofuel would maximize the ratio of energy output to energy input. The following graph illustrates the results of a 10-year study analyzing three different crops used in biofuel production. The data show how much energy was required to grow each crop on 1 hectare of land (energy input) and how much energy was recovered from the total crop on each hectare of land (energy output). A hectare is a measurement of an area of land and is roughly the same as 2.5 acres. What was the estimated energy input of the grass? A. kcal x 10^6 B. 2kcal x 10^6 C. 8kcal x 10^6
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