When the congo river reaches kinshasa,
it flows into a large lake
it flows slowly into the atlantic
its course is blocked by cataracts
it becomes an irrigation canal

If my memory serves me well, the answer should be: When the Congo River reaches Kinshasa, it flows slowly into the Atlantic. Congo River is the second largest lake in the world. It takes a long way to reach the Atlantic: In the middle it flows towards Matadi and divides into several arms and finally it freely flows into the Atlantic.

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

Answera discharge of static electricity;