Hummingbirds drink nectar from flowers, while robins eat plant seeds. what does this reduce?

Each trait of a plant is determined a. an allele b. one gene c. a pair of genes d. one dominant gene

__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

What happens when the cell copies its chromosomes