At week 5-6 of gestation, the baby’s heart starts beating.
Explanation
Fertilization occurs in week 3 followed by implantation in week 4.In week 5 the levels of hormones increases with formation of the baby’s heart and circulation system. In week 6, the neutral tube closes followed by development of structures necessary to form eyes and ears. The head of the baby develops at week 7 followed by nose in week 8 and toes in week 9.
The heart begins beating, in the 5th-6th weeks of gestation
The first thing that happens in a developing child is the heart begins beating in 5-6 weeks of gestation. This is followed by the baby’s brain and spinal cord will develop from the neural tube.
Decrease as the more frogs there are the more flies will be eaten so that means the flies will decrease.Also if the flie population gets low enough the frog population would shrink too to balance it.
The model of the atom which was supported by the gold foil experiment was nuclear model. Scientists wanted to prove plum pudding model, however, their experiments led to interesting results which made them hypothesize the nuclear model of the atom instead.
