Which of the following is a rule of thumb for cell phone or smartphone etiquette?

Which of the following is a way that advancements in technology improve humans' ability to measure air quality and protect human health?

If you could drill a hole straight to the center of the earth, and keep track of what the hole is going through, youwould find: a) you would go through one sort of material, and then a different, denser material, and then a still-different, still-denser material, because the planet is made of concentric layers, sort of like an onion. b) you would go through one sort of material all the way to the center, because the planet is all mixed up. c) if your hole started at the north pole, you would go through different layers of different materials, but ifyour hole started at the equator, you would go through one sort of material all the way to the center. d) if your hole started at the equator, you would go through different layers of different materials, but if yourhole started at the north pole, you would go through one sort of material all the way to the center. e) you would strike diet pepsi when you got to the center.

Poling our way along the inky green waterway, we glided upstream through quiet still-water bends in the river, where mats of fragrant white flowers had gathered, closing behind the stern of our 24-inch-wide dugout and concealing any sign of our passage. —eric hansen, stranger in the forest: on foot across borneo, 1998 which of these items in the passage is an example of borneo’s flora? a. “the inky green waterway” c. “mats of fragrant white flowers” b. “still-water bends in the river” d. “the stern of our 24-inch-wide dugout”