Magnets are created due to the uniform motion of a) electrons. b) iron. c) metal. d) nuclei.

The correct answer is option A, electron

Reason -

Magnetism is caused due to the electric charge (electron) motion. When an electric charge moves , a magnetic effect is produced at right angle to its direction of motion.  

For instance if we place a steel or iron nail inside a coil through which electricity is passed at right angle , the nail gets converted to magnet.  

hello there,

igneous rock formed from below the surface would have more crystals because

answer: because magma cools more slowly than lava

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: