What was the rate of the Pacific Plate motion relative to the Hawaiian hotspot as it was developing the 2,300 km long Emperor Seamount Chain from 65 Myr to 42 Myr

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.