A decomposer because it decomposes the matter and turns it into nutrients for the environment. <span />
Plants produce oxygen that animals use for respiration
Volcanism can trigger mass extinction because, Volcanic debris changes the climate.
Explanation:
This pollutant is ozone, carbon dioxide, sulphur dioxide, carbon monoxide.
Answer:
It helps cells to make proteins.
It provides a source of water
It provides form of usable Nitrogen.
It removes carbon dioxide from the atmosphere.
It destroys harmful bacteria.
