work in pairs. Student a says an active sentrnce, the student B makes it passive

1
A: Bees carry pollen from one flower to another.
B: Pollen is carried from one flower to another by bees.
2
A: Flowers use the pollen to make their seeds.
B: The pollen is used by flowers to make their seeds.
3
A: The wind carries the seeds from one flower to another.
B: The seeds are carried from one flower to another by the wind.
4
A: We call this process 'pollination'
B: This process is called 'pollination'