Which if the following physical features is a piece if land that surrounded by water in three sides

The answer is a peninsula..Hope this helps!! I apologize if I am wrong.

The answer is the magnetosphere.

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