carbon cycle   (TTS Sound)

The carbon_cycle has 2 Senses.

• carbon cycle
• the organic circulation of carbon from the atmosphere into organisms and back again
• 炭素の有機的な循環で、大気から生命体へ、そして再び元に戻る

• carbon cycle
• a thermonuclear reaction in the interior of stars
• 恒星内部の熱核反応