Read the dictionary entry. compound n. 1. a combination of two or more ingredients or parts 2. a substance formed by
the chemical union of two or more elements 3. a word that consists either of two or more
elements that are independent words 4. a building or buildings set off by an enclosed barrier
Now read the sentences.
In science we are learning about certain compounds that are essential to life, like water. Each
water molecule is made up of two hydrogen atoms and one oxygen atom.
Which definition from the dictionary entry matches the meaning of compounds as it is used in the
sentences?
A. definition 1
B. definition 2
C. definition 3
D. definition 4

Refer to explorations in literature for a complete version of the text. in “letter from birmingham jail,” martin luther king, jr., presents the idea that american history includes african americans, too; that is, african americans can claim the same historical heritage as white americans. at the time, this was a radical idea. how does king develop this theme? select each correct answer. he points out the many ways that african americans have contributed to the culture of america. he describes how african americans were present “before plymouth rock” and through many key moments in american history. he argues that african americans would have participated in more events of american history if white americans had been willing to include them. he makes connections between the american fight for independence from britain and the civil rights movement.