The appendages of a dolphin are modified for movement in water and the appendages of a dog are modified for running. these are examples of which character category of homologous structures? a) embryonic b) derived c) nascent d) primitive

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:

b. the carbon cycle ensures living things have a source of hydrogen