Geologists use epochs to further divide geologic eras and periods. Put the following epochs from the Cenozoic Era in chronological order, from the earliest to the most recent. a. Pliocene b. Paleocene c. Eocene d. Miocene e. Oligocene

Which of these is a drawback of using natural gas? a. it is fairly safe for use in homes.b. it burns more cleanly than crude oil products.c. scientists have developed new ways of extracting it.d. during its extraction, groundwater can be contaminated.