Question

what is hydrogen cycle ?☝​

Answer 1

Answer:

The hydrogen cycle consists of hydrogen exchanges between biotic (living) and abiotic (non-living) sources and sinks of hydrogen-containing compounds. ... Hydrogen is also thought to be an important reactant in pre-biotic chemistry and the early evolution of life on Earth, and potentially elsewhere in our solar system.

Explanation:

Answer 2

Answer:

hydrogen cycle is chemical element with the symbol h and atomic number 1 hydrogen is lightest element