Ozone is formed when a. two oxygen molecules combine b. an individual oxygen atom combines with an oxygen molecule c. ultraviolet radiation breaks apart four oxygen molecules d. oxygen molecules are broken into separate atoms

Which two factors caused many americans to migrate to the west in the mid-nineteenth century? pick two the texas revolution discovery of gold at sutter’s mill the mexican-american war an interest in american indian culture cheap land prices

How did the opposing sides of the revolutionary war compare

His is the name of the group in the house of representatives that, in 1947, began hearings to expose communist infiltration in american life. unfortunately, a good deal of the evidence they used was based on hearsay and conjecture, meaning innocent people were harmed by their findings.