{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

mid term review - be absorbed by animals and plants This...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
28) Air is about 78% nitrogen, but plants cannot directly use the nitrogen from the air. Explain why not in layperson’s terms. Then describe two ways in which plants do get nitrogen Nitrogen from the atmosphere cannot be used directly for animals and plants because it exist in form of N 2, which is impossible for any living things to absorb a. One way that involves humans: People can use commercial fertilizer in which atmospheric nitrogen is combined with hydrogen to form ammonia. Then ammonia can be applied directly to crop for it to get nitrogen. The process of making nitrogen requires methane and coal, so it is not very ideal to the environment. b. One way that does not involve humans: Nitrogen-fixation is one way to convert atmospheric nitrogen in to “fixed” nitrogen that can
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: be absorbed by animals and plants. This complex process can be carried out by bacteria in the ground in association with “legumes-nitrogen fixing” plants like fava beans, clover to enrich the soil with nitrogen. 53) Explain and put in context Yoram’s statement that “I’m not worried that we might be running out of coal, I’m worried that we might not be running out of coal.” • Yoram used the class metaphor of the invisible hand for “ not worried that we might be running out of coal ”. It means that the ‘invisible hand” will tell us that we will never run out of coal. • Yoram used the class metaphor of the tragedy of the commons for “ worried that we might not be running out of coal”...
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern