Similar words: near to, earth, earthquake, nearly, nearby, far and near, not nearly, heart. Meaning: adv. used with question words to convey surprise.
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241. What on earth does any of this have to do with our feelings of conscious awareness?
242. Why on earth didn't I just tell Luke everything and get the hell out?
243. The only creature on earth whose natural habitat is a zoo is the zookeeper. Robert Brault 
244. For example, the gravity field on the lunar surface is about one seventh as strong as on Earth.
245. On Earth, progressive tabernacles called ethical investment schemes have been using currency to support social causes for some time.
246. Nothing will benefit human health and increase the chances for survival of life on Earth as much as the evolution to a vegetarian diet. Albert Einstein
247. The actual animals that have ever lived on Earth are a tiny subset of the theoretical animals that could exist.
248. A dog is the only thing on earth that loves you more than he loves himself. Josh Billings
249. Some bacteria that live in mud on Earth use chains of magnetite as tiny compasses to determine which way is up.
249. Sentencedict.com try its best to collect and build good sentences.
250. All these constraints form the third crucial stage of the evolution of life on earth.
251. On the farther bank of Ocean were mysterious peopIe, whom few on earth ever found their way to.
252. Everything seems to be built of mirrors - what on earth has happened to brick?
253. Pain & suffering are always inevitable for a large intelligence and a deep heart. The really great men must, I think, have great sadness on earth. Fyodor Dostoyevsky
254. Communists set out to construct heaven on earth, and built hell.
255. The greatest joy on earth is to truly love. Discover love today. Experience the bliss & fulfillment that comes from loving and caring. Love is magical. RVM
256. Desert areas on Earth often have wide diurnal temperature ranges due to nighttime radiative cooling through very clear skies.
257. Do not think that I have come to bring peace on earth.
258. Where on earth had she got her muddled values from?
259. Gazza's goal convinced Maradona there is no greater player on earth than the irrepressible Geordie.
More similar words: near to, earth, earthquake, nearly, nearby, far and near, not nearly, heart, at heart, by heart, give ear to, heart and soul, year after year, neat, sneak, one another, beneath, one after another, north, fourth, worth, northern, worthy, northeast, for the rest, over there, be worth, other than, come forth, call forth.