Write seven sentences on the benefits of volunteering​

The term for a fertilized egg that has begun cell division but is not yet a fetus is

Aprovision of the general agreement on tariffs and trade treaty (gatt)increased taxes on services between the us, mexico, and canada.reduced international tariffs on industrial goods by forty percent.increased us tariffs on agricultural products by forty percent.ended taxes on goods traded by the us, mexico, and canada.

Why is it necessary to obey social norms? write briefly.