This is a difficult question. Are there any options?
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.
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Answer:
Appearance
Explanation:
Appearance, more than any other factor, has occasioned the objectification of aging. This can have serious consequences on people as they age. Some people might become overly concerned with their looks. Women are particularly affected by this phenomenon. Moreover, people might assume that an older apperance comes with certain decline in cognitive or motor skills, even when the person is still healthy and productive.
Answer:
This is an example of marginal analysis, as the decisions made by Raphael are on margin.
Explanation:
The decision of Raphael about pool versus bike time is totally a "how-much decision". It is clear that pool time and bike time can both reduce the time for race. However, the efficiency of pool time is high currently, and hence there is much sense in trying to spend more time in the pool and less on bike. This however makes no sense that all the time is spent in the pool and no time biking. Raphael only intends to alter the number of hours spend on each activity at the margin.