Why are secondary sources important to the study of history?
(a).museums usually contain the majority of these sources.
(b).these sources provide information written by other authors.
(c).these sources include bones and weapons.

Select the correct answer. in what type of immunity will the defenses be triggered and react in the same manner, regardless of the organism invading? a. adaptive b. innate c. primary d. mechanical barrier

Carefully examine this photograph of a home bomb shelter. fearing a nuclear attack, many people put these in their homes during the 1950s. describe what you see in the image. what kinds of things did this homeowner think to include?

According to the excerpt, an increasing number of people are getting political news from which source? a. television b. radio c. magazines d. the internet