The fermenter is sealed off from the air except for a long narrow vent pipe, which allows carbon dioxide to escape from the fermenter. Since there is a constant flow of CO2 through the pipe, outside air is prevented from entering the fermenter, which reduces the threat of contamination by stray yeasts.
The right answer is :
B. He wants to disprove the idea that poor nations will eventually be able to support themselves.
<em>Explanation:</em>
<em>The author believes that rather than money and food, exporting technology and advice is a more modern approach. However he admits that whether or not the Green Revolution can increase food production as much as it claims is a debatable.</em>
<em>According to the author this is an irrelevant point. He referenced a Rockefeller Foundation Vice-President who likened the growth and spread of humanity over the earth's surface to the spread of cancer in a human body. </em>
Central park is a great place in New York to go visit, experience new things, and have a great adventure!
It’s most likely B.
A doesn’t have a full stop. C has no full stop and a random capital letter. D just isn’t a question, so it shouldn’t have a question mark.
number 1 is have. i'd rather not HAVE tell you.
