Most serious accidents happen at what time of day? a. morning b. afternoon c. twilight-darkness d. serious accidents happen at about the same rate throughout the day

Why was frederick douglass encouraged by the dred scott decision?

How does specialization enable countries to trade with one another? a country can make and sell goods affordably and buy goods that it is inefficient at making. a country can make what it chooses and sell its goods to other countries. a country can decide to buy everything it needs from other countries. a country can efficiently make goods that were once difficult to make.

The symbols found on the map below indicate where fossils have been found in the same layer of sediment. each unique symbol represents fossil locations of a particular species.