How did stromatolites contribute oxygen to the early atmosphere? by weathering of rocks

through photolysis

through methane degradation

through photosynthesis

i think that it's radiating electro magnetic radiation

some bombs actually use electromagnetic radiation in a emp (electromagnetic pulse) to disable electronics and antennas.

a ratio derived from the equality between two different units that can be used to convert from one unit to the other. information obtained from experiments, sometimes called experimental results. the part of the experiment that is affected by the independent variable.