It depends on which two reservoirs it is, could you explain further ? It could be photosynthesis, respiration, combustion, decomposition, or deforestation
A patron system is a type of system where rich traders, merchants, or craftsmen give money to artists, scientists, poets, writers, etc.
In exchange for money and support they can create their works of art, or just any other type of work that they were performing.
The Cabinet includes the Vice President and the heads of 15 executive departments — the Secretaries of Agriculture, Commerce, Defense, Education, Energy, Health and Human Services, Homeland Security, Housing and Urban Development, Interior, Labor, State, Transportation, Treasury, and Veterans Affairs, as well as the Attorney General.