Which of the four spheres is this pictures/scene? A) hydrosphere
B) biosphere
C) geosphere
D) atmosphere

In science and physics what is the standard unit of measure for speed?

Which of the following situations is impossible? a) an object has velocity directed east and acceleration directed east. b) an object has zero velocity but non-zero acceleration. c) an object has constant non-zero velocity and changing acceleration. d) an object has velocity directed east and acceleration directed west. e) an object has constant non-zero acceleration and changing velocity.

Which is the most accurate name for the ionic compound cas?