Question

how many tonnes of methane is produced due to the decay of biotic waste​

Answer 1

Answer:

Due to the swamp-like environment of rice fields, these paddies yield 50–100 million metric tons of methane emission each year. This means that rice agriculture is responsible for approximately 15 to 20 percent of anthropogenic methane emissions.

Answer 2

During year 2019, about 360 million tons (60 percent) of methane were released globally through human activities, while natural sources contributed about 230 million tons (40 percent).