If the mass of the impactor is (increased/decreased)

Which statement best describes what the symbolism in this passage from everyday use by alice walker reveals about the narrator character

What was the great rift valley formed by

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.