Antigens are usually the proteins
Menstruation because that’s when we shed what was made to carry a baby. Ovulation is the bast time to get pregnant and you have a better chance then. And Fertilization is when an egg is given a sperm to soon become a baby
To proceed scientifically, you could measure several properties of the unknown liquid and compare them with the properties of known substances. You might observe and measure such properties as color, odor, texture, density, boiling point, and freezing point.
Answer:
Cells spend more time in the interphase than in the mitotic phase. Cells grow in the intephase thats why they apend their time there mostly.
Gametes are sex cells. The reproductive system.