The rate at which the earth is losing heat is an unreliable age indicator because
the earth is not losing heat
the earth was originally cold
heat from radioactivity confuses the problem
the atmosphere traps heat

when a reversible reaction is occurring in both directions at the same rate; the products and reactants do not change in concentration. a chemical reaction where the compound is broken into its constituent parts.

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.

biology is the study of life. it is the study of living organism.

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."