Researchers say carbon emissions from tropical forests will increase as the climate warms, as rising temperatures accelerate the decay of dead plants and trees, giving off more CO2. (sciencedaily.com)
They blend dead plant material left from harvest into the soil. (sciencedaily.com)
Because fossil fuels, such as oil, are naturally formed from dead plant matter, they also contain a smaller ratio of carbon - 13 to carbon - 12. (washingtonpost.com)