Answer: We got it wrong when we checked off flooding. We are going with C) craters on surface. AND E) death of organisms and populations.
Explanation:
Answer
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.
Haploid gametes egg/ sperm body cells
