(1) like diamonds, pearls are highly valued and prized for both their beauty and their rarity. (2) a pearl is mostly made of calcium carbonate, which also forms marine organisms like coral and sea urchins.(3) pearls are produced by mollusks, such as mussels, oysters, clams, and snails. (4) mollusks are invertebrates with a soft body, usually protected by a shell. (5) when any tiny object gets inside (such as a small piece of shell), mollusks protect their delicate bodies by coating the object with calcium carbonate.(6) this then becomes the tiny "seed" of a pearl. (7) large pearls take a few years to grow, and it is very hard to find ones that have a perfect round shape. (8) over time, the pearl gets bigger as the mollusk keeps coating the foreign object with layers. (9) generally speaking, bigger pearls are considered rarer and more valuable. (10) these large pearls are quite rare and very expensive.

which sentence in this passage is in the wrong place?

select one:
a.
sentence 10
b.
sentence 7
c. sentence 2
d. sentence 5

Study the map below. based on the information shown on this map, which ofthe following locations served as an eastern border for the mongol empire?

Which part of the story shows how kiara and tanya's differences affect their friendship? kiara and tanya were the best of friends. when they were 10 years old, they always went everywhere together. all their friends knew that if they found one of them, they would find the other. anyone who didn't know them thought that they were twins because both kiara and tanya had long, silky red hair and pale complexions. they were even similar in height and build. they were more like sisters than friends. but as similar as they were in appearance, they were just as different when it came to their personalities. this difference didn't affect their friendship, at least not for a long time. kiara always got out and participated in activities and competitions. tanya was happiest when reading a book at home. kiara was outgoing and talkative. tanya was quiet and shy. kiara was popular, and people were drawn to her because of her ability to make quick friends. tanya hardly had any friends besides kiara. as they grew older, kiara managed to make a large group of friends. tanya, on the other hand, still remained shy and reserved. this difference in their personalities eventually caused a rift between the two friends. tanya would refuse invitations to parties and movies that kiara invited her to. she just didn't want to hang out with people she didn't know that well. kiara couldn't understand why. she thought tanya disliked her friends. eventually, kiara and tanya both realized that they had outgrown one another. they still remained friends, but they were not as close as they once had been.

One of the author’s purposes in the code book is to explain different types of codebreaking to his readers. which line best demonstrates this purpose? a theoretical breakthrough would be a fundamentally new way of finding alice's private key mathematicians have been studying factoring for centuries, and modern factoring techniques are not significantly better than ancient techniques a more recent development is the so-called tempest attack, which aims to detect the electromagnetic signals emitted . . in a computer's display unit if scientists could build a quantum computer, it would be able to perform calculations with . . enormous speed