I think no one will answer my question correctly but if anyone does i would appreciate it so much that I'd give you 5 stars, a thanks, and brainliest. Make sketches to identify two river features that can create challenges for people. Label your sketches to show how these features can present problems.

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What is the central idea in this advice from branch rickey to jackie robinson?  

Read the excerpt from the code book. without much hope of a theoretical breakthrough, cryptanalysts have been forced to look for a technological innovation. if there is no obvious way to reduce the number of steps required for factoring, then cryptanalysts need a technology that will perform these steps more quickly. silicon chips will continue to get faster as the years pass, doubling in speed roughly every eighteen months, but this is not enough to make a real impact on the speed of factoring—cryptanalysts require a technology that is billions of times faster than current computers. consequently, cryptanalysts are looking toward a radically new form of computer, the quantum computer. if scientists could build a quantum computer, it would be able to perform calculations with such enormous speed that it would make a modern supercomputer look like a broken abacus. the author’s purpose in this paragraph is to convince the readers to pursue a career in analysis. explain the need for faster technology in cryptanalysis. entertain with interesting stories about supercomputers. argue for more money to develop a quantum computer.

"so doom appeared to us, dark word of zues for us, our evil days. my men stood up and made a fight of it. backed on the ships, with lances kept in play, from bright morning thriugh the blaze of noon so holding our beach, although so far outnumbered. which elements of epic poetry are demonstrated in this passage? " check all that apply. a. repetition b.an epic hero showing bravery in battle. c. an invocation of the muse. d. a difficult journey with trials. e. supernatural elements