Shield volcanoes form from lava; composite volcanoes form from lava. a) low; high b) high; low

The study of rocks is called petrology. There are different types of rocks and these are granite, marble, igneous and etc.

The correct answer is mentioned below.

A mountain that has a hole in it that is filled with lava. Volcanoes can be active or dormant.

According to the question, Shield volcanoes form from HIGH-viscosity lava; composite volcanoes form from LOW-viscosity lava.

Hence, the correct answer is high and low.

For more information about the volcanos, refer to the link:-

link

i have no clue hope you find the answer

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