What is the answer?

Carbon cycles through several Earth subsystems. Which sequence most directly leads to the cycling of carbon that can result in the formation of petroleum?

OPTIONS:
- biosphere to lithosphere
- atmosphere to lithosphere
- hydrosphere to atmosphere
- biosphere to atmosphere
biosphere to lithosphere
Vad är svaret? Kolcykler genom flera jordsystem. Vilken sekvens leder mest direkt till cykling av kol som kan resultera i bildandet av petroleum? ALTERNATIV: - biosfär till litosfär - atmosfär till litosfär - hydrosfär till atmosfär - biosfär till atmosfär
What's the answer? Carbon cycles through several earth systems. Which sequence leads most directly to the cycling of carbon that can result in the formation of petroleum? ALTERNATIVE: - biosphere to lithosphere - atmosphere to lithosphere - hydrosphere to atmosphere - biosphere to atmosphere
biosfär till litosfär
biosphere to lithosphere