Convection cannot occur in solids
Rainforests are sometimes called the lungs of earth
give resons
Answers
Answer:
Tropical rainforests are often called the “lungs of the planet” because they generally draw in carbon dioxide and breathe out oxygen. But the amount of carbon dioxide they absorb, or produce, varies hugely with year-to-year variations in the climate. A new paper published this week in the journal Nature shows that these variations reveal how vulnerable the rainforest is to climate change.
Dr Chris Huntingford, a climate modeller with the Centre for Ecology & Hydrology (CEH) joined a team of scientists from the University of Exeter and the Met Office Hadley Centre to carry out the study.
The study reveals a new way to find out how sensitive biological systems are to changes in climate. The key was to learn how to read the year-to-year variations in the concentration of carbon dioxide in the atmosphere.
The paper's lead author, Professor Peter Cox of the University of Exeter, explained that scientists have been struggling for more than a decade to answer the question of whether the Amazon forest will die back under climate change. He said, "Our study indicates that the risk is low if climate change is associated with increased plant growth under elevated carbon dioxide. But if this effect declines, or climate warming occurs due to something other than a carbon dioxide increase, we expect to see a significant release of carbon from tropical ecosystems."
Carbon dioxide increases each year as a result of burning fossil fuels and deforestation. But the amoun
Explanation: