The concept of compare and contrast is to take two unlike things and compare similarities and contrast differences.
Examples: t-chart, venn diagram
Answer:You should never skip lines.
Explanation:
1. The correct answer is: periodical index.
Magazines, DVDs, and books may be found anywhere. But libraries provide an index of periodicals that have been arranged by years and dates. This serves as a reference tool for people.
2. The correct answer is: dictionary.