18) occasionally equatorial sea surface temperatures warm up and fishing along south america's coast fails. what do we call that pattern? does it have any effect in colorado?

This effect is due to the El Nino

Explanation:

The occasional sea surface temperatures warm up and fishing along the south America coastlines fails due to the impact sp trade winds that bring up the warm phase of a larger phenomenon.called as the ENSO southern oscillation. Opposite of this phase os describes the La Nina i.e oceanic cooling of sea surface temperatures. The El Nino effects occur randomly every tear from an interval of 2 to 7 years.  This feature has effects on colorado has upon the summer months as a risky of the wet extreme event seen from national oceanic and atmospheric administration.  Another impact can be seen fn the fish population of this region as the due impacts of El Nino on this region this decrease of freshwater fishes also and drought conditions impact the state of colorado.

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