How did the evolution of photosynthesis contribute to the change in Earth's atmosphere and life on the planet? Reduced oxygen levels Release of oxygen Increased greenhouse gases Enhanced nitrogen content Multiple Choice 1 point How did eukaryotic cells likely evolve according to the endosymbiotic theory? Via volcanic activity By forming multicellular organisms Through random mutation

Question

How did the evolution of photosynthesis contribute to the change in Earth's atmosphere and life on the planet? Reduced oxygen levels Release of oxygen Increased greenhouse gases Enhanced nitrogen content Multiple Choice 1 point How did eukaryotic cells likely evolve according to the endosymbiotic theory? Via volcanic activity By forming multicellular organisms Through random mutation

Answer 1

1. B. Release of oxygen2. C. Through random mutation

Answer 2

## Step 1The first question is about the evolution of photosynthesis and its impact on Earth's atmosphere and life. Photosynthesis is a process used by plants and other organisms to convert light energy, usually from the sun, into chemical energy that can be later released to fuel the organisms' activities. This process produces oxygen as a byproduct, which is released into the atmosphere.## Step 2The second question is about the endosymbiotic theory, which is a theory that explains the evolution of eukaryotic cells. According to this theory, eukaryotic cells evolved from a mutualistic relationship between two or more prokaryotic cells. The theory suggests that these prokaryotic cells were engulfed by a larger cell and began living within it, eventually becoming an integral part of the larger cell.

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