Which group of animals does not have a backbone

__1__ is a climate cycle where the temperature of the __2__ ocean changes because of movements of air and ocean currents. during this period, the trade winds in the south __3__ , causing the __4__ water to move from the __5__ region to the __6__ region. 1) el nino or the monsoon 2) atlantic, indian, or pacific 3) reverse, strengthen, or weaken 4) cold or warm 5) eastern or western 6) eastern or western

Of seawater increases with decrease in the temperature. therefore, the cold water sinks to the deeper layers at the bottom

What best describes the dropping height of a ball that bounces back up to a height of 45 cm