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decomposers are what breaks down dead plants and animals and cause them to decay quickly
yes
when plants die, they go through decomposition. types of decomposers are fungi and bacteria. they help to break dead plants into simpler substances like carbon dioxide, water and mineral salts. that is why plants decay.
Fungi and bacteria.
plant roots
In short, no. The oxygen they produce is from photosynthesis, which in a dead tree will by definition not be happening. There will be many products produced from its decay, like CO2. The only metabolic process that produces oxygen is photosynthesis which only requires CO2, water and light, none of which will come from a dead tree.
Bacteria and fungi attack the dead plant or animal and start breaking it down as their food.
That is the process of decay.
No, bacteria or insects that eat plants use oxygen and the dead plants, which contain carbon, release carbon not oxygen.
its true(: