The viscosity of magma depends on its A. oxygen content
B. water content
C. silica content
D. pahoehoe

C.

Explanation:

Viscosity depends on primarily on the composition of the magma and temperature. Higher silica content magmas have higher viscosity than lower silica content magmas

lunar landing mission. apollo 11 was the first manned mission to land on the moon. the first steps by humans on another planetary body were taken by neil armstrong and buzz aldrin on july 20, 1969. the astronauts also returned to earth the first samples from another planetary body.

explanation:

regents of the university of california v. bakke, 438 u.s. 265 (1978), was a landmark decision by the supreme court of the united states. it upheld affirmative action, allowing race to be one of several factors in college admission policy.