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The light reactions of photosynthesis occur in the thylakoid membranes of chloroplasts, where sunlight is captured by chlorophyll and converted into chemical energy. This process generates ATP and NADPH while splitting water molecules, releasing oxygen as a byproduct. The energy produced during these reactions is vital for powering the subsequent dark reactions (Calvin cycle) that synthesize glucose. Ultimately, the light reactions play a crucial role in sustaining life on Earth by producing oxygen and fueling the energy needs of various ecosystems.

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What process is responsible for producing earths oxygen?

The process responsible for producing Earth's oxygen is photosynthesis, which occurs in plants, algae, and some bacteria. During photosynthesis, these organisms use sunlight, water, and carbon dioxide to produce oxygen and glucose. The oxygen released by photosynthesis is essential for supporting life on Earth.


What organisms produce about half of the earths oxygen?

trees


What process adds oxygen to earths atmosphere?

Photosynthesis


Earths atmosphere was first changed by?

photosynthesis


How does the light reaction of photosynthesis affect the earths supply of oxygen?

Photosynthesis is the source of virtually all the free oxygen in the earth's atmosphere.


Is mount novarupta responsible for any of earths surface changes?

is mount novarupta responsible for any of earths surface changes


What was the earths atmosphere before photosynthesis?

Without life because when plants do photosynthesis, they produce oxygen.


What process is most responsible for the increase in early Earths atmospheric oxygen levels?

The process most responsible for the increase in early Earth's atmospheric oxygen levels is photosynthesis. This is the process by which plants, algae, and some bacteria convert carbon dioxide and sunlight into oxygen and energy. Over time, the accumulation of oxygen from photosynthesis led to the rise in atmospheric oxygen levels.


What added oxygen to earths early atmosphere?

The primary sources of oxygen in Earth's early atmosphere were likely photosynthetic organisms like cyanobacteria, which began producing oxygen as a byproduct of photosynthesis. Over time, this oxygen built up in the atmosphere, leading to the development of oxygen-rich conditions on Earth.


What effect does photosynthesis have on the amount of oxygen in the atmosphere?

Photosynthesis is the source of virtually all the free oxygen in the earth's atmosphere.


Which group of organisms is most responsible for changing the compisition of earths early atmosphere?

Cyanobacteria are the group of organisms most responsible for changing the composition of Earth's early atmosphere. Through photosynthesis, they released oxygen into the atmosphere, fundamentally altering its composition and paving the way for aerobic organisms to evolve.


What gas was not found in earths early atmosphere but was produced by photosynthesis?

Carbon dioxide