Prevailing winds and pressure belts are major climate controls. A belt of low pressure known as the intertropical convergence zone (ITCZ) lies along the Equator. On either side of the equatorial low, between 25Â° and 30Â° latitude in each hemisphere, is a belt of high-pressure centers over the oceans. From the equatorial side of these subtropical highssuch as the Hawaiian high.
The normal breathing rate for a 4 month old baby is between 30 and 60 breaths per minute.
4-6 Month Sleep Tips. 1  Babies this age will start to quit nighttime feedings, and are usually ready to sleep through the night now, anywhere from six- to 12-hour stretches.  Research shows about 60 percent of babies sleep through by 6 months, up to 80 percent do so by 9 months.