Question

although photosynthesis and chemosynthesis start off their equations differently, they both produce one of the same products that supports the food chain. what product (on the right side of the equation) is produced by both photosynthesis and chemosynthesis?
c₆h₁₂o₆ (sugar also known as \food\ or glucose)
water (h₂o)
hydrogen sulfide (h₂s)

Explanation:

Photosynthesis uses light - energy to convert carbon - dioxide and water into glucose and oxygen. Chemosynthesis uses chemical energy to produce organic compounds like glucose. Both processes produce glucose ($C_6H_{12}O_6$) which is a source of energy for the food chain. Water is not the main product supporting the food - chain and hydrogen sulfide is not a common product of both.

Answer:

$C_6H_{12}O_6$ (sugar also known as "food" or glucose)