All animals undergo a process of multiplication that is increasing in number by producing young ones while the parent group grow old and die. Generation begins with a single parent increasing by producing a number of offsprings and the offspring brings other numbers of offspring in order words increasing from a family to families to kindred to kindreds to town to state to country to countries to the region until the whole world.
Other animals multiply till they become clusters of animals all over the place
How does this happen?
This happens between a male and a female. a male produces sperm and pours it into the female vagina setting out a race between millions of females and males and each one of them would be targeting a ripe ovum which falls off from a female reproductive organ called ovary in a period called ovulation period. Any of the sperm that reaches the ovum and capable of penetrating into it has won the race. This process is called Fertilization
Here, I will be dealing with human Fertilization
HUMAN REPRODUCTION (PREGNANCY)
Fertilization can take place in a woman through different ways;
1, If a man and a woman have intercourse ( coitus) and there is a union of ovum and sperm pregnancy will occur. This is a natural way of getting pregnant. Fertilization occurs at the ampulla of the fallopian tube forming embryo which travels along the fallopian tube and embeds itself at the woman’s wall in the uterus
2, Artificial insemination; According to Wikipedia ” artificial insemination is a deliberate introduction of sperm into a female’s uterus or cervix for the purpose of achieving a pregnancy through in vivo fertilization by means other than sexual intercourse
3, In Vitro Fertilization (IVF). This is another way of helping women to get pregnant by fertilizing an egg inside a tube in the laboratory dish and implanting the embryo into the woman’s uterus and she becomes pregnant. Medical News describes it as the most common and most effective type of assisted reproductive technology (ART) to help women become pregnant and declared that IVF has contributed to approximately 5 million births.
4, External Ejaculation; this is an ejaculation that occurs any other place outside other than inside the vagina. If it happens at the vaginal orifice it might bring about pregnancy.
MedicalNewsToday (3rd June 2017) http://www.medicalnewstoday.com/articles/317746.php