I just need an answer no explanation

B(charge)

Explanation:

That's the answer

protons and electrons both have a charge

Explanation:

Protons have a positive charge and electrons have a negative charge. However neutrons are neutral and so have no charge

- decrease the number of plants and animals living in the water.

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