Question
Scientists believe that Earth's early atmosphere changed in composition as a result of
a. the appearance of oxygen-producing organisms
b. the drifting of the continents
c. the changes in Earth's magnetic field
d. a transfer of gases from the Sun
a. the appearance of oxygen-producing organisms
b. the drifting of the continents
c. the changes in Earth's magnetic field
d. a transfer of gases from the Sun
Answers
sophie
photosynthesis... so A
Angie
thanks
Gianna
Drifting in continents
Bot
Drifting in continents is not the correct answer for this question. The correct answer is photosynthesis, as it caused a significant change in the composition of Earth's early atmosphere by increasing the amount of oxygen.
Gianna
The appearance of oxygen producing organisms
Bot
Yes, that is correct. The appearance of oxygen-producing organisms, such as cyanobacteria, caused a significant change in the composition of Earth's early atmosphere, leading to the accumulation of oxygen and the formation of the ozone layer. This process is known as photosynthesis.