영어 수행 Flashcards
1
I wanna be a semiconductor engineer, so I would like to specialize in chemical engineering in University.
2
This is because chemical process is involved in the semiconductor manufacturing process.
3
Therefore, I chose a book related to chemistry and the title of the book is ‘The Chemistry Textbook is Alive.’
4
It contains the contents of ‘chemistry1’ and ‘chemistry2’, which are subjects learned in high school.
5
Therefore, it was easy to see how what I learned in school works in real life.
6
It has various chemical story, but in this time, I’ll introduce the ‘bioenergy’ part.
7
It takes energy to run machines or turn on the air conditioner, and we get most of this energy from fossil fuels.
8
However, since fossil fuels can be depleted and cause environmental pollution, renewable energy is attracting attention these days.
9
Among the various renewable energies, bioenergy is energy generated from living organisms, known as biomass.
10
The types of bioenergy currently developed and used include bioethanol made by fermenting corn or sugarcane, and biodiesel made from waste cooking oil or discarded animal oil.
11
the carbon footprint generated when bioenergy is used is less than that of fossil fuels.
12
This is because when bioenergy is burned, carbon is released into the atmosphere, and this carbon is later absorbed when biomass photosynthesizes.
13
Thus, Even if bioenergy is burned to obtain energy, it does not increase carbon dioxide in the atmosphere, but this is only theoretical.
14
In fact, it generates carbon dioxide because fossil fuels are used in production processes such as grain cultivation and reprocessing.
15
In addition, there is a problem that the land that humans should use and the food that humans should eat are used for bioenergy production.
