Place these developmental milestones in the correct order. (1 being the first milestone to happen) baby is born different cell layers form cell divides heartbeat/movements detected movements strengthened organ systems mature organs and limbs form embryo implants size and weight increase greatly sperm fertilizes egg

The correct order in which development occurs from fertilization of the egg is:

Sperm fertilizes egg .Cell divides. Implants size and weight increase greatly. Different cell layers form .Organs and limbs form embryo. Heartbeat/movements detected .Movements strengthened .Organ systems mature .Baby is born.

Explanation:

Sperm fertilizes egg: it is the process called fertilization, which consists of the union of the paternal gametes to originate the zygote. Cell divides: Once the zygote has formed, it undergoes successive divisions by mitosis, to originate the different structures. Implants size and weight increase greatly: successive divisions cause the implanted zygote to progressively increase in size. Different cell layers form: consists of the formation of the embryonic layers -ectoderm, mesoderm and endoderm- from which the tissues and organs of the embryo will be formed. Organs and limbs form embryo: from the three embryonic leaves the different apparatuses and sisythems of the embryo are formed. Heartbeat / movements detected: Initiates the function of organs such as the heart and extremities. Movements strengthened: movements in the embryo are more continuous and defined. Organ systems mature: the nervous, cardiovascular, digestive and respiratory systems, among others, are suitable for birth. Baby is born.

When the baby is able to survive outside the womb, birth occurs.

Learn more:

Development of the offspring link

This is what i did 45-5=4040÷4=10so there are 10 white marbles but am not sure is just a question that am not sure