Answer:
See below
Explanation:
From the definitions, it is definitely the second, although I would question the term small-scale.
Natural selection is the change of a species traits and characteristics over time to adapt to its environment. Over a period of time, the species will change and evolve because of its changing traits to adapt.
Ocean currents can be caused by wind, density differences in water masses caused by temperature and salinity variations, gravity, and events such as earthquakes or storms. Currents are cohesive streams of sea water that circulate through the ocean.
(Always willing to give a helping hand)
