Carbon Cycle

what is the key carbon reservoir

atmosphere

carbon sinks

carbon reservoirs that absorb more carbon than it releases

examples of carbon sinks

ocean, plants, soil, forests

carbon source

processes that add carbon to the atmosphere

photosynthesis is a carbon ____

sink

cellular respiration is a carbon _____

source

direct exchange (oceans)

co2 moves directly between atmosphere and the ocean by dissolving into and out of ocean water at the surface

what does increasing atmospheric co2 lead to for oceans

increased ocean co2 leading to ocean acidification

what marine animals take co2 out of oceans

coral reef to make calcium carbonate shells

sedimentation

marine organisms die and are broken into sediments that contain carbon

burial

over long periods of time, pressure of water compresses carbon-containing sediments on ocean floor into sedimentary stone - long term carbon reservoir

extraction + combustion

digging up or mining fossil fuels and burning them as energy source; releases co2 into atmosphere