Mammals use their lungs to provide oxygen for themselves from the air. Fish spend a majority of their time in the water, and instead, developed gills. What is the function of gills? * Answer please

Respiration.

Explanation:

Gills help the fish in carrying out their respiration

some sources quote the lethal dose, for an average 170lbs opiate-naive individual is between 75 and 375 mg

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