What are two reasons why arriving above ground all at once increases the cicadas’ chances of surviving and reproducing? Why do scientists think it is helpful to the periodical cicadas to emerge every 13 to 17 years?

Answer these two questions please! Giving out ALOT of points for these :) NO LINKS!!

cuz he is really really short, assuming an unorthodox and inherently unlucky configuration of elevator buttons…

explanation:

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.