Question

1. peatlands and permafrost are two of the earths most important carbon sinks. peatlands form in wetlands where dead plant material accumulates slowly because decomposition is limited by waterlogged conditions. over thousands of years, this plant material becomes peat, storing large amounts of carbon underground. similarly, permafrost - permanently frozen soil in arctic regions - traps dead plants, animals, and microbial decomposers, keeping carbon locked away for thousands of years.

when temperatures rise due to climate change, peatlands can dry out and permafrost can thaw. this allows microbes to decompose the previously frozen or waterlogged organic matter, releasing carbon dioxide and methane into the atmosphere. this release can contribute to further warming, which can then cause even more thawing or drying, creating a feedback loop. this exposure of peat to environmental factors also impacts the frequency of peat - fires to occur. using information from the text and previous knowledge:
(a) explain one way carbon is stored in peatlands and permafrost, make sure to describe the cellular process involved in this storage.
(b) explain one way carbon can be released from these sinks, make sure to describe the cellular process involved in this storage.

Explanation:

(A) In peatlands, dead plant material accumulates slowly in water - logged conditions. Decomposition is limited, and over time, this plant material becomes peat, storing carbon. The cellular process related is that plants through photosynthesis fix carbon into organic compounds, and in water - logged conditions, the slow decomposition means carbon remains stored underground. In permafrost, permanently frozen soil traps dead plants, animals, and microbial decomposers, locking away carbon for long periods.
(B) When temperatures rise due to climate change, peatlands can dry out and permafrost can thaw. Microbes then decompose the previously frozen or water - logged organic matter. The cellular process is cellular respiration by these microbes, which breaks down organic compounds (containing carbon) and releases carbon dioxide and methane into the atmosphere.

Answer:

(A) In peatlands, dead plant material accumulates slowly in water - logged conditions, becoming peat and storing carbon. Plants fix carbon via photosynthesis and slow decomposition keeps it stored. In permafrost, frozen soil traps organic matter, locking away carbon.
(B) Warming causes peatlands to dry and permafrost to thaw. Microbes decompose organic matter through cellular respiration, releasing carbon dioxide and methane.