In what trimester does these happen

a sac called a placenta forms around the embryo and is connected to the embryo with an umbilical cord.
a) first
b) second
c) third

En el ecuador existieron comunidades prehispanicas que practicaban algun tipo de ritual de enterramiento como el que se describe en el articulo la solidaridad comenzo en las cabernas

per vehicle mile, motorcyclists are times more likely to die in a crash than passenger car occupants.

Match the serving size with the correct type of food. a steak: rice: celery: coleslaw: chicken: a muffin: answer choices : size of your palms, size of your fingers, unlimited, cut in half