How would a base on the moon help enable manned space exploration to mars

idk

explanation:

dasdad

its first and third is your answer i did the qustion the fourth isnt right

l dont know l am s sorry

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer