Which is the best example of a compare and contrast structure?
a- soccer and american football are both ball games. an oval ball is used in football, while a spherical ball is used in soccer.
b- ryan and allan have lunch together. they bring lunch from home.
c- centralized air conditioning is often blamed for the excessive use of energy resources in offices.
d- the planet jupiter is known to have extremely violent and harsh atmospheric conditions.

We will be learning about animals that live in the arctic. your assignment is to find information about one animal in the arctic. be sure that you find the following information about the animal: average height and weight, appearance, diet, shelter, mating habits, and any other interesting or important facts. we will use the information that you gather in the research with an in-class project. be sure to keep track of your sources; your final project will require a works cited page. in an internet search engine, which group of keywords is most appropriate for this assignment? a) project, arctic, diet b) arctic, animals, facts c) cold, appearance, animals d) average height and weight, one animal