Trilobites were rapidly evolving and widespread marine organisms that spanned a number of geologic time periods. Certain types of trilobites only appeared in specific segments of geologic time; therefore, when one of these trilobites is found, you can be certain that the rock layer it is found in is of a certain geologic age.
Answer:
Chinese homes differed, like anything else, depending on one's social class and how much money one had. Peasants lived in huts while merchants and other middle-class people lived in houses made of wood, which were built around a rectangular courtyard where a garden would be planted.
Explanation:
USSR (Russia) was led by Stalin
A)Only the oldest sons of The Spanish
D)Native people, Called I ndians, lived of hard work and poverty
