Eskers and end moraines are both ridges of sediment deposited by glaciers. Describe one way in which they differ.

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So  if  the sum of the enthalpies of the reactants is greater than the products, the  reaction  will be  exothermic.  if  the products side has a larger enthalpy, the  reaction  is  endothermic. you may wonder why  endothermic reactions, which soak up energy or enthalpy from the environment, even happen

Answeroil-shale;

There is no map, maybe give the link, it may be b