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The atmosphere was changed from being a reducing one to an oxidizing one. Then, the most important change was regarding the relative concentration of molecular oxygen, which is thought to have incremented a thousand times. Concomitantly the ozone layer also formed.

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What component of Earths atmosphere exists entirely as a result of photosynthesis?

Oxygen is the component of Earth's atmosphere that exists entirely as a result of photosynthesis. Plants and other photosynthetic organisms convert carbon dioxide into oxygen during the process of photosynthesis.


What component of the earths atmosphere exists as a result of photosynthesis?

Oxygen is the component of the Earth's atmosphere that exists as a result of photosynthesis. During photosynthesis, plants and other photosynthetic organisms release oxygen as a byproduct. This process helps to replenish and maintain the oxygen levels in the atmosphere, supporting aerobic life forms.


What component of Earth and atmosphere exists entirely as a result of photosynthesis?

Oxygen is the component of Earth's atmosphere that exists entirely as a result of photosynthesis. Photosynthesis is the process by which plants, algae, and some bacteria convert carbon dioxide and water into glucose and oxygen using sunlight as an energy source.


What changes were necessary in earth atmosphere to allow complex organism to evolve?

The increase in oxygen levels and the decrease in carbon dioxide levels in Earth's atmosphere were necessary changes that allowed for the evolution of complex organisms. These changes occurred as a result of photosynthetic organisms producing oxygen and sequestering carbon dioxide, creating an environment suitable for the development of multicellular life forms.


Most of the atmospheric oxygen occurs as a result of photosynthesis From which of the following molecules is the oxygen derived?

The oxygen in photosynthesis is derived from water.

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When organisms began using photosynthesis what gas was added to the atmosphere as a result?

Oxygen is one of the products of photosynthesis and is the gas that rose in abundance in the atmosphere due to the process of photosynthesis.


What component of Earths atmosphere exists entirely as a result of photosynthesis?

Oxygen is the component of Earth's atmosphere that exists entirely as a result of photosynthesis. Plants and other photosynthetic organisms convert carbon dioxide into oxygen during the process of photosynthesis.


What component of the earths atmosphere exists as a result of photosynthesis?

Oxygen is the component of the Earth's atmosphere that exists as a result of photosynthesis. During photosynthesis, plants and other photosynthetic organisms release oxygen as a byproduct. This process helps to replenish and maintain the oxygen levels in the atmosphere, supporting aerobic life forms.


Several amendments from the 1800s are concerned with the issue of slavery What changes occurred as a result of these amendments?

Several amendments from the 1800s are concerned with the issue of slavery. What changes occurred as a result of these amendments?


Several amendments form the 1800's are concerned with the issue of slavery what changes occurred as a result of these amendments?

Several amendments from the 1800s are concerned with the issue of slavery. What changes occurred as a result of these?


What changes have occurred in the habitat of a leopard as a result of declining population?

What changes have acurred in an habitat oaf a leopard as a result of declining population


What component of Earth and atmosphere exists entirely as a result of photosynthesis?

Oxygen is the component of Earth's atmosphere that exists entirely as a result of photosynthesis. Photosynthesis is the process by which plants, algae, and some bacteria convert carbon dioxide and water into glucose and oxygen using sunlight as an energy source.


What were two changes that occurred in Americas as a result of this exchange?

Taino and tenochtitlan


What are the sources of atmospheric oxeygen?

The oxygen in the atmosphere is the result of biological activity. It is the byproduct of photosynthesis by plants.


What changes were necessary in earth atmosphere to allow complex organism to evolve?

The increase in oxygen levels and the decrease in carbon dioxide levels in Earth's atmosphere were necessary changes that allowed for the evolution of complex organisms. These changes occurred as a result of photosynthetic organisms producing oxygen and sequestering carbon dioxide, creating an environment suitable for the development of multicellular life forms.