Why is the greenhouse effect important for life on the earth? 1. it protects the earth from solar radiation.2. it keeps the sun's heat and light equal.3. it determines the position of the earth.4. it keeps the earth's air and water warm. say me now plis

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