객관식
In a chemical reaction involving the decomposition of calcium carbonate (CaCO3), which gas is produced?
685
views
7. Gases
The Ideal Gas Law
Multiple Choice
Which process is believed to have contributed to Earth's oxygen-rich atmosphere according to atomic theory?
A
Combustion of organic matter
B
Volcanic eruptions releasing oxygen
C
Formation of ozone layer
D
Photosynthesis by early cyanobacteria
검증된 단계별 안내1
Understand that the question is asking about the process that contributed to Earth's oxygen-rich atmosphere.
Recognize that photosynthesis is a process where organisms convert carbon dioxide and water into glucose and oxygen, using sunlight as energy.
Identify cyanobacteria as early photosynthetic organisms that played a crucial role in producing oxygen through photosynthesis.
Acknowledge that the oxygen produced by cyanobacteria accumulated in the atmosphere over time, leading to an oxygen-rich environment.
Conclude that photosynthesis by early cyanobacteria is the process believed to have significantly contributed to Earth's oxygen-rich atmosphere.
Related Videos
Related Practice
