Answer:
The Moon completes a circle around the Earth in approximately 28 days.
The stem of the plant should be cut at least three to four centimeters above the surface level.
The stem should be tightly fixed into the glass capillary.
All connection should be made air-tight by using paraffin.
Initial and final readings should be carefully noted.
What are your problems in bio?
The answer is gametes, or sex cells.
