How did cyanobacteria aid the evolution of complex life on land? do you think cyanobacteria are as significant to this process today as they were during precambrian time?

Im is in a crowd of people at the mall looking for his girlfriend tammy, who was supposed to meet him for dinner. jim realizes tammy is across the room as he catches a whiff of her overpowering perfume, 'paris #6'. which process explains why jim is able to smell the perfume?

10. in which phase will crossing-over occur? a. mitosis b. metaphase ii c. prophase i d. meiosis ii

When are the centromeres broken in meiosis?