a.
Compare and contrast bus travel with train travel, including the advantages and disadvantages of each.

b.
Compare and contrast honeybees and wasps, and use the details to determine which insect is more important to farmers and why.

c.
Analyze the differences and similarities between summer sports and winter sports, including equipment, physical exertion, and accessibility.

d.
Analyze the differences and similarities between burning coal and burning natural gas, including costs and environmental impacts.