26. Watch a slide show about trees.
Learn how to prevent Dutch elm disease.
Study the history of the campus buildings and grounds.
Look at examples of trees on campus.
27. History.
Physical education.
Botany.
Architecture.
28. Its leaves are yellow.
Its leaves are lopsided.
It is very tall.
It is not an angiosperm.
29. It has grown too tall for its designated space.
It may be diseased.
Its branches are being broken off.
It no longer hears from.
Passage Two
30. Jeffersons views about commercialized agriculture.
International trade in the nineteenth century
Improvements in farm machinery in the United States.
Farmers loss of independence
31. Crop production became increasingly specialized.
Economic depressions lowered the prices of farm products.
New banking laws made it easy to buy farmland.
The United States increased its agricultural imports.
32. Prices for farm products rose.
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