In the nuclear equation given below what is the mass number of the alpha particle? 238/92 U 234/90 Th + 4/2 He + 2 0/0y

answer; they use longitude and latitude and   global grid system; good luck

the proximity of water was an advantage to western europe and its culture was able to flourish as a result. trade and travel by sea were easier and safer in historical times.

1. there are no mountains to protect it from the sea

2. and its has wet cool summers and wet, mild winters.

what events in mexico's history might explain why the country continues to have difficulty improving social justice and economic opportunities for all people?