There are different ways fossils can form. Fossils can be molds, or imprints left from something buried. The actual structure decomposes, but the shape is left behind. A shell imprint in a rock is an example. Fossils can also be casts. Casts are molds that fill in over time. They show a three-dimensional shape of the structure that used to be there. A walnut mold that fills in with minerals is an example. Plants and animals can also be preserved when they are trapped in certain circumstances. Tar, ice and amber have all trapped animals for thousands of years. Amber comes from tree resin, or sap, which hardens. Insects from long ago have been found preserved in it. In California, tar pits preserved many animals, including a mastodon and a saber-toothed cat. What is the difference between a mold and a cast?
A Molds are body fossils, and casts are trace fossils.
B A mold is an imprint, and a cast is a filled-in imprint.
C Molds are made of amber, and casts are made of tar.
D Molds come from plants, and casts come from animals.

What evidence does the author provide to demonstrate bach natural musical talent

Select the correct text in the passage. in richard connell's short story "the most dangerous game," zaroffs aristocratic appearance and dignified manners mask his sinister, animalistic nature. which line from the excerpt best provides a glimpse into his true nature? rainsford's first impression was that the man was singularly handsome; his second was that there was an original, almost bizarre quality about the general's face. he was a tall man past middle age, for his hair was a vivid white; but his thick eyebrows and pointed military mustache were as black as the night from which rainsford had come. his eyes, too, were black and very bright. he had high cheekbones, a sharpcut nose, a spare, dark face-the face of a man used to giving orders, the face of an aristocrat. turning to the giant in uniform, the general made a sign. the giant put away his pistol, saluted, withdrew. "ivan is an incredibly strong fellow," remarked the general, "but he has the misfortune to be deaf and dumb. a simple fellow, but, i'm afraid, like all his race, a bit of a savage." "is he russian? " "he is a cossack," said the general, and his smile showed red lips and pointed teeth. "so am i." half apologetically general zaroff said, "we do our best to preserve the amenities of civilization here. forgive any lapses. we are well off the beaten track, you know." laughter shook the general. "how extraordinarily droll you are! " he said. "one does not expect nowadays to find a young man of the educated class, even in america, with such a naive, and, if i may say so, mid-victorian point of view. it's like finding a snuffbox in a limousine. ah, well, doubtless you

Which detail should most likely be cited in a historical criticism of a literary work ? the author's use of dialogue in the literary work the impact the literary work has on modern audiences the popular cultural trends of the time when the work was written the audience that the literary work is likely to reach in the future