Effects of the Changing Carbon Budget (AQA A-Level Geography): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What percentage of human CO₂ emissions have plants absorbed since 1960?
What percentage of human CO₂ emissions have plants absorbed since 1960?
25%
What primarily limits carbon fertilisation in plants?
What primarily limits carbon fertilisation in plants?
Water and nutrient supply
What percentage of atmospheric CO₂ has dissolved into oceans?
What percentage of atmospheric CO₂ has dissolved into oceans?
30%
By how much has ocean surface pH dropped due to CO₂ absorption?
By how much has ocean surface pH dropped due to CO₂ absorption?
0.1 units
At what rate has Arctic sea ice been retreating over the last 35 years?
At what rate has Arctic sea ice been retreating over the last 35 years?
12.8% per decade
What is the ice-albedo feedback mechanism?
What is the ice-albedo feedback mechanism?
Dark water absorbs more heat than ice
What is the current rate of global sea level rise since the early 1990s?
What is the current rate of global sea level rise since the early 1990s?
3.1 mm per year
What is the current level of radiative forcing according to IPCC AR5?
What is the current level of radiative forcing according to IPCC AR5?
2.8 watts/m²
What percentage of Earth's greenhouse effect does CO₂ cause?
What percentage of Earth's greenhouse effect does CO₂ cause?
20%
How many people worldwide depend on coral reefs for food and livelihood?
How many people worldwide depend on coral reefs for food and livelihood?
500 million