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:
artificial trees carry a warning label
Explanation:
So that you know what your essay is about you need evidence to build you argument on
Answer:
E
Explanation:
2/3rds vote in both Senate and house can override a veto
