Assume that banks hold no excess reserves and that all currency is deposited into the banking system. If the required reserve ratio is 10.00%, and the Federal Reserve wants to increase the money supply by $50.00 million, the Fed would need to make an open market purchase of $ ___ million. (Insert your answer in millions, and round to two decimal places.)​

Sam and ben have discovered some strange animals living in the woods behind their house. ben is excited because he believes they are marsupials, an animal he's never observed in the wild before. his brother is sure it is not. what feature should the boys consider in deciding whether the animals are marsupials?

Apopulation is a group of individuals of a single species existing together in an area. a population’s range, the area it occupies, changes over time. populations, in turn, may form a network, or metapopulation, connected by individuals that move from one group to another. within a population, the distribution of individuals can be random, uniform, or clumped, and the distribution is determined in part by the availability of resources. how might the geographic range of a species change if populations could not exchange individuals with each other? how would your answer depend on what type of metapopulation existed?

Why have the aztec ruins in mexico city not been dug up?