Choose the answer that best describes what kind of substance ocean water is.
heterogeneous mixture
homogeneous mixture

heterogeneous mixture

Explanation:

The ocean water will be heterogeneous mixture. A heterogeneous mixture is the one which the composition of the mixture is not uniform which means the mixture consists of two or more substances.

Ocean water is a heterogeneous mixture because it consist of variety of salt ions such as chlorides and sodium. The concentration of salts also varies.

nanotechnology is a powerful tool in biomaterials research as it creates numerous possibilities for the engineering of functional molecules. nano-bio refers to projected ability to incorporate biomimicry into various materials at nanoscale.  

i think   the answer is c hope i'm right