Which is an organic compound?
a sample b contains cesium and chlorine.
b sample a contains carbon, hydrogen, and oxygen.
c sample c contains hydrogen, oxygen, and phosphorus.

micro/nanoscale topography surface exhibits many prominent properties and is extensively employed in biomedical device, microfluidic device and energy device fabrication. additionally, the clinical applications of biomaterials can be largely expanded with of nanostructured surfaces.

not too sure but maybe in the hot springs.