A classmate tells you that the boundaries of human populations are at the borders of countries. Is your classmate correct? Explain why or why not.

she is correct because,

A political boundary is an imaginary line separating one political unit, such as a country or state, from another. Sometimes these align with a natural geographic feature like a river to form a border or barrier between nations. Occasionally, two countries may contest where a particular border is drawn. These disputes might arise due to a natural resource both groups want, like in the case of Sudan and South Sudan, or in an attempt to gain more political power, as in the case of Pakistan and India in the Kashmir region.

the transfer of energy between two molecules spaced just nanometers apart plays a key role in many technologies, including photovoltaics, quantum information systems, lighting, and sensors, as well as in biophysics to measure nanometer distances and in photosynthesis. but an open question in this area is what effect, if any, the surrounding photonic environment has on this nanoscale energy transfer. by designing and performing a carefully controlled experiment to answer this question, scientists have settled the debate and found clues to improving the efficiency of many of the technologies that rely on this process.

explanation: