Question

How did the development of early photosynthetic bacteria impact Earth's early atmosphere? a. They excreted Ozone, which gave us an Ozone layer. b. They removed Carbon Dioxide from the air and put back Methane. c. They caused water vapor to be more abundant in the atmosphere. d. They put Oxygen molecules into the atmosphere that lead to our Oxygen rich atmosphere today. e. They put Ammonia (NH

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) into the atmosphere that was later dissociated and is the cause of our Nitrogen rich atmosphere today.

Answer 1

d. They put Oxygen molecules into the atmosphere that lead to our Oxygen rich atmosphere today

Step-by-step explanation:

Photosynthesis is a process by which atmospheric carbon dioxide is taken up by organism and with the help of sunlight converted to glucose giving oxygen as a by product. This free oxygen is released into the atmosphere.

when the earliest bacteria who could perform photosynthesis evolved on our earth they too started releasing free oxygen in the atmosphere. Which in turn combined with other gases and caused the early reducing type atmosphere of Earth into an oxidizing one paving the way for other heterotrophic organisms to evolve.