Ciclo del Carbono y el humano

During how many years did the CO2 not exceed 300 ppm?

• 5,000,000 years

• 500,000 years

• 50,000

• 5,000

Which is the percentage of CO2 absorbed by the ocean?

• 80%-90%

• 70%-80%

• 50%-70%

• 30%-50%

What parts of the carbon cycle absorb CO2?

• The rest of living beings

• photosynthesis

• Gas absorption by the oceans

How much CO2 do the trees store?

• 14%

• 35%

• 53%

• 19%

Which is the main method by which carbon is absorbed?

• by the plants

• by the humans

• by the rocks

• by the oceans

Why are shell builders important to the carbon cycle?

• Because they keep the CO2 in the oceans

• Because they help biodiversity

• Because they are a food supply

• Because they transform CO2 gas into oil

What is the name of the mass extinction generated by the increase in CO2?

• Cambric extinction

• Triassic extinction

• Permian extinction

• Jurassic extinction

What was the economic activity that emitted the most CO2 in 2018?

• Transportation

• electricity

• industry

• agriculture

What is oil made of?

• it is made of plants

• it is made of sea animals

• it is made of dinosaurs

• it is made of rock

When the increase in atmospheric CO2 started?

• Since the creation of agriculture

• Since the industrial revolution

• Since the invention of cars

• Since the rise of humanity