Question

Scientists believe that the Earth's early atmosphere lacked _____ gas because photosynthetic organisms did not yet exist.

Answer 1

Scientists believe that the Earth's early atmosphere lacked nitogen gas because photosynthetic organisms did not yet exist.

Answer 2

Answer: Scientists believe that the Earth's early atmosphere lacked oxygen gas because photosynthetic organisms did not yet exist.

Explanation: Photosynthesis is largely responsible for producing and maintaining the oxygen content of the Earth's atmosphere and it supports life on Earth. Most plants, most algae, and cyanobacteria perform photosynthesis and are also known as photosynthetic organisms and are responsible for producing oxygen but as the vanishing now a days so Earth's atmosphere is lacking oxygen gas.