A science class is exploring a rocky hillside for fossils. They find some fossils from ancient sea-shells. The fossils are located in layers of rock formed out of compacted particles of sand. The species of animal that created the fossils is now extinct. What conclusion can be drawn from this fact?

racism and segregation.

a and b!

dfroos means which is a and b

lancelot said to the beautiful ellen i c u r a b u t l n (i see you are a beauty lancelot was the greatest and worst of the knights who became the king's champion and undertook quests in the king's name. he became the adulterous lover of queen guinevere, and they had a son named galahad.

the steam engine.

the locomotive.

the telephone.

the telegraph.

the internal combustion engine.

the rifle.

ironclad ships.

electricity/light bulb.