According to the following balanced reaction, how many moles of CaO are required to exactly react with 4.33 moles of H2O? CaO(s) + H2O(l) → Ca(OH)2(s)

Yes, endothermic means it turns cold. and some chemical changes include change of tempature.

Conservation efforts have been effective in "increasing the number of endangered species, reducing all the negative impacts of human activity, and preserving wildlife habitats".hope my answer has you : ) 

Ibelieve it's temperature! i'm not 100% sure.