What happens to a developing child first apex?

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.

the second type of galaxy is called a barred spiral, which has a thing called a bar straddling the nucleus

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.