Evolution of Earth

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What has been responsible for the careful removal of CO2 from the atmosphere over billions of years?

The sun's luminosity

The Earth's axis inclination

Oil, natural gas, and coal formations (correct)

Natural cycles in the Earth's climate

What has caused the increased concentration of CO2 in the atmosphere, leading to global warming?

Humans digging up and burning carbon sources (correct)

The Earth's axis inclination

The sun's luminosity

Natural cycles in the Earth's climate

What has recent evidence conclusively shown about the levels of CO2 added to the atmosphere since 1800?

They have been due to changes in the Earth's axis inclination

They have been almost entirely due to human pollution (correct)

They have been due to changes in the sun's luminosity

They have been due to natural cycles in the Earth's climate

What has the Earth's climate been doing for the majority of the last 1,000 years, according to the text?

Cooling Signup and view all the answers

What has reversed the Earth's cooling trend of the last 1,000 years, according to the text?

Human intervention, mainly in the 20th century Signup and view all the answers

What is the main purpose of the ozone layer mentioned in the text?

To block harmful ultraviolet (UV) rays from space Signup and view all the answers

How is ozone (O3) formed in the Earth's atmosphere according to the text?

By combining two oxygen atoms Signup and view all the answers

What is the primary role of carbon dioxide in relation to global warming, as explained in the text?

It traps infrared radiation, contributing to the greenhouse effect Signup and view all the answers

What is one of the primary reasons for the destruction of the protective ozone layer mentioned in the text?

Chlorofluorocarbons released by human activities Signup and view all the answers

Why is oxygen (O2) essential for the formation of the ozone layer according to the text?

To split into single oxygen atoms when exposed to UV rays Signup and view all the answers

What was the nature of Earth's atmosphere billions of years ago?

Filled with rich amounts of carbon dioxide, nitrogen, and water vapor Signup and view all the answers

What process helped remove the excessive levels of carbon dioxide from the ancient Earth's atmosphere?

Dissolution of carbon dioxide in water and formation of limestone Signup and view all the answers

What was a major difference between the ancient Earth and the Earth we know today?

The ancient Earth was inhospitable and deadly Signup and view all the answers

What was a key factor that led to the change in Earth's atmosphere over time?

Reduction in volcanic activity Signup and view all the answers

What was a key factor that led to the change in Earth's atmosphere over time?

The appearance of photosynthetic plants in large numbers Signup and view all the answers

How did the ancient Earth's atmosphere differ from the Earth's atmosphere today?

It contained more carbon dioxide and less oxygen Signup and view all the answers

What process helped remove the excessive levels of carbon dioxide from the ancient Earth's atmosphere?

Both (b) and (c) Signup and view all the answers

What was a major difference between the ancient Earth and the Earth we know today?

The ancient Earth had higher levels of radiation Signup and view all the answers

What has been responsible for the careful removal of CO2 from the atmosphere over billions of years?

The formation of limestone in the oceans Signup and view all the answers

What happens when the sun's ultraviolet radiation reaches the Earth's surface?

It is reflected back into space. Signup and view all the answers

What is the main function of the ozone layer in the Earth's atmosphere?

To block ultraviolet rays Signup and view all the answers

How do chlorofluorocarbons contribute to the destruction of the ozone layer?

By reverting ozone back into oxygen Signup and view all the answers

What would happen if there was no greenhouse effect on Earth?

The Earth would be significantly warmer. Signup and view all the answers

How does carbon dioxide contribute to global warming?

By absorbing infrared radiation Signup and view all the answers

What has been the primary cause of the increased concentration of CO2 in the atmosphere leading to global warming?

Human pollution and the burning of carbon sources Signup and view all the answers

What does the text indicate has been the trend in the Earth's climate for the majority of the last 1,000 years?

Cooling Signup and view all the answers

What has been the primary process responsible for the careful removal of CO2 from the Earth's atmosphere over billions of years?

Storage in oil, natural gas, and coal deposits Signup and view all the answers

What does the text suggest has been the primary role of CO2 in relation to global warming?

CO2 absorbs heat from the sun, causing the greenhouse effect Signup and view all the answers

What has the text indicated is the primary reason for the reversal of the Earth's cooling trend over the last 1,000 years?

Human intervention and pollution, mainly in the 20th century Signup and view all the answers

Evolution of Earth

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Questions and Answers

What has been responsible for the careful removal of CO2 from the atmosphere over billions of years?

What has caused the increased concentration of CO2 in the atmosphere, leading to global warming?

What has recent evidence conclusively shown about the levels of CO2 added to the atmosphere since 1800?

What has the Earth's climate been doing for the majority of the last 1,000 years, according to the text?

What has reversed the Earth's cooling trend of the last 1,000 years, according to the text?

What is the main purpose of the ozone layer mentioned in the text?

How is ozone (O3) formed in the Earth's atmosphere according to the text?

What is the primary role of carbon dioxide in relation to global warming, as explained in the text?

What is one of the primary reasons for the destruction of the protective ozone layer mentioned in the text?

Why is oxygen (O2) essential for the formation of the ozone layer according to the text?

What was the nature of Earth's atmosphere billions of years ago?

What process helped remove the excessive levels of carbon dioxide from the ancient Earth's atmosphere?

What was a major difference between the ancient Earth and the Earth we know today?

What was a key factor that led to the change in Earth's atmosphere over time?

What was a key factor that led to the change in Earth's atmosphere over time?

How did the ancient Earth's atmosphere differ from the Earth's atmosphere today?

What process helped remove the excessive levels of carbon dioxide from the ancient Earth's atmosphere?

What was a major difference between the ancient Earth and the Earth we know today?

What has been responsible for the careful removal of CO2 from the atmosphere over billions of years?

What happens when the sun's ultraviolet radiation reaches the Earth's surface?

What is the main function of the ozone layer in the Earth's atmosphere?

How do chlorofluorocarbons contribute to the destruction of the ozone layer?

What would happen if there was no greenhouse effect on Earth?

How does carbon dioxide contribute to global warming?

What has been the primary cause of the increased concentration of CO2 in the atmosphere leading to global warming?

What does the text indicate has been the trend in the Earth's climate for the majority of the last 1,000 years?

What has been the primary process responsible for the careful removal of CO2 from the Earth's atmosphere over billions of years?

What does the text suggest has been the primary role of CO2 in relation to global warming?

What has the text indicated is the primary reason for the reversal of the Earth's cooling trend over the last 1,000 years?

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