What is the blag hypothesis?

What is the blag hypothesis?

The BLAG spreading rate hypothesis Proposes that increased spreading rates lead to increased release of CO2 by magma into the atmosphere.

What is the polar position hypothesis?

The polar position hypothesis is the hypothesis that ice sheets exist during intervals in Earth’s history when landmasses are moved into polar regions by plate tectonic processes.

Why do higher CO2 concentrations make sense as an explanation for this greater warmth?

Why do higher CO2 concentrations make sense as an explanation for this greater warmth? The higher levels of the greenhouse gas in the atmosphere will naturally raise the temperature by keeping the heat from traveling off into deep space. Also, it is now believed that deep ocean water was much cooler than surface water.

What is the reason for the rise in CO2 levels quizlet?

Why have levels of carbon dioxide steadily increased in the last 200 years? – The burning of fossil fuels as an energy source has increased the rate of release. – Deforestation to clear land decreases rate of absorption.

What is the main reason why atmospheric CO2 levels are increasing today?

Carbon dioxide concentrations are rising mostly because of the fossil fuels that people are burning for energy.

What activities can increase the amount of atmospheric CO2 quizlet?

We are increasing the amount of CO2 in the atmosphere by reducing the mass of photosynthetic organisms through deforestation and ocean pollution (aquatic algae are a huge photosynthetic community). Increases in greenhouse gases have been linked to global warming.

How do greenhouse gases affect Earth’s climate quizlet?

How does the greenhouse effect influence the climate on earth? It traps heat from the sun and it prevents earth from getting too cold. including carbon dioxide, methane, and nitrous oxide, absorb some of the radiated heat, keeping the atmosphere and the surface of Earth warm.

How does the greenhouse effect play a role in determining the climate on Earth?

The greenhouse effect is a process that occurs when gases in Earth’s atmosphere trap the Sun’s heat. This process makes Earth much warmer than it would be without an atmosphere. The greenhouse effect is one of the things that makes Earth a comfortable place to live.

Could we survive on earth without the greenhouse effect quizlet?

What is the greenhouse effect? No we would not be able to survive because without these gases, the Earth would be too cold for humans, plants and other creatures to live. The two largest greenhouse gases are Co2 and methane which comes from fossil fuels ,coal ,oil, and other gases.

How does human activity affect greenhouse gases?

There is overwhelming evidence that human activities, especially burning fossil fuels, are leading to increased levels of carbon dioxide and other greenhouse gases in the atmosphere, which in turn amplify the natural greenhouse effect, causing the temperature of the Earth’s atmosphere, ocean, and land surface to …

What are the effects of climate on human activities?

The impacts of climate change include warming temperatures, changes in precipitation, increases in the frequency or intensity of some extreme weather events, and rising sea levels. These impacts threaten our health by affecting the food we eat, the water we drink, the air we breathe, and the weather we experience.

What shows the effect of climate change?

Increased heat, drought and insect outbreaks, all linked to climate change, have increased wildfires. Declining water supplies, reduced agricultural yields, health impacts in cities due to heat, and flooding and erosion in coastal areas are additional concerns.