Answer: Before about week 8 of pregnancy, a doctor may refer to the fetus as an embryo. The heart of an embryo starts to beat from around 5–6 weeks of pregnancy. Also, it may be possible to see the first visible sign of the embryo, known as the fetal pole, at this stage.
Answer:
It is C. increase in height because of spinal disc expansion.
Explanation:
Running. D, I was going to put down, A, but D is most logical as well.
I would say its Sleep Habits ,Vaccinations,Nutrition
Answer:
A system is a group of individual parts that work together to form a unified whole. ... The final product or service provided by a system. Feedback loop. A process of monitoring outputs to determine whether or not the system is working.