Elements that cycle in the environment and that also have a gaseous phase at some point in their cycle include what?

Carbon, nitrogen and sulphur.

Explanation:

In carbon cycle, carbon dioxide is in the gaseous form in atmosphere. This gaseous carbon dioxide is emitted in the atmosphere through combustion of fossils, respiration, decomposition. In nitrogen cycle, atmospheric nitrogen is in the gaseous form which is emitted through denitrification. In sulphur cycle, sulphur is in the form of gaseous sulphur dioxide in the atmosphere. This sulphur is emitted in the atmosphere by the volatilization of hydrogen sulphide.

kepler used the data from tycho blahe (his mentor) to construct the laws of planetary motion.

the duration of a photographic flash is related to an rc time constant, which is 0.100 μs for a certain camera.