from forest fires and volcanoes, as well as the decay of dead plants and animals, causes a type of pollution from carbon oxides.

Carbon dioxide (CO2)

Explanation:

Carbon dioxide is one of the most common atmospheric gases. It is naturally produced into the atmosphere in the following ways:

- via cellular respiration in organisms

- forest fires

- volcanic eruption

- decomposition of dead matter (plants and animals)

The release of CO2 gas into the atmosphere by one or all of the above listed ways poses a great threat to the environment as it causes a type of pollution. CO2 causes pollution by being a greenhouse gas i.e gases capable of trapping heat. This results or contributes to global warming in the atmosphere.

the wires in the toaster turning red and the toast crisping and turning brown

a scenario where a cell may be needed to perform a form of endocytosis is when transporting large molecules. a scenario where a cell may be needed to perform a form of exocytosis is when releasing the large molecule from the cell.