What mineral is this? fist-sized irregularly shaped piece. salmon-pink color with nonmetallic luster. two cleavage planes at 90 degrees to each other. has a hardness of 6. very abundant mineral.

The diagram shows the structures of horse and cat forelimbs. what does the diagram suggest about the evolutionary relationship between these two mammals? a. they have homologous structures, indicating a common ancestor. b. they have analogous structures, indicating a common ancestor. c. they have homologous structures, indicating that they do not have a common ancestor. d. they have analogous structures, indicating that they do not have a common ancestor.

As you watch a surfer ride a wave towards the shoreline, what is the shoreline? a) displacement reference b) reference point c) coordinate plane d) cartesian boundary

What forms when chemical reactions combine pollution with sunlight?