The ets reactions produce atp from adp using the energy provided by which two molecules?

nad+ and fad

nadh and fadh2

adp and atp

pyruvate and co2

The correct answer is NADH and FADH₂.

ADP is synthesized from ATP using the H+ ions released from both NADH and FADH₂ which oxidizes to NAD+ and FAD2+. The H+ ions move to inter membrane space and are utilized by ATP.  

answer; i believe the correct answer to the above question is ( friction)

primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs