B, ocean trenches are formed after a underwater volcano has erupted.<span />
prophase
Further genetic variation comes from crossing over, which may occur during prophase I of meiosis. In prophase I of meiosis, the replicated homologous pair of chromosomes comes together in the process called synapsis, and sections of the chromosomes are exchanged.
Hope it helps!
what are the options though....
A pancreatic cell engaged in the production of digestive enzymes
should be the answer ur looking for
Act as a baseline to compare your data to
Its a thing used in photosynthesis <span />
