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Read Changes on Earth and Changes in Life. Explain how changes in Earth’s systems affected the growth of life on Earth. Use evidence from the text to support your answer.

User Wollnyst
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Here is how changes in Earth’s systems affected the growth of life on Earth:

The formation of the ozone layer: The ozone layer is a layer of gas in the atmosphere that protects life from harmful ultraviolet radiation from the sun. The ozone layer formed about 3.5 billion years ago, and it is thought to have been essential for the development of complex life on Earth.

The evolution of photosynthesis: Photosynthesis is the process by which plants use sunlight to convert carbon dioxide and water into oxygen and glucose. Photosynthesis is thought to have evolved about 2.7 billion years ago, and it is essential for the existence of most life on Earth.

The movement of continents: The continents of Earth have been moving around for billions of years. This movement has created new habitats for life, and it has also led to the extinction of some species.

The rise and fall of sea levels: Sea levels have risen and fallen many times throughout Earth's history. This has caused the flooding of some areas and the exposure of others. It has also led to the extinction of some species and the evolution of others.

The occurrence of mass extinctions: Mass extinctions are events in which a large number of species become extinct over a relatively short period of time. There have been five major mass extinctions in Earth's history, and they have been caused by a variety of factors, including asteroid impacts, volcanic eruptions, and climate change.

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