Strategies for writing an effective introduction. Start by thinking about the question (or questions) you are trying to answer. Your entire essay will be a response to this question, and your introduction is the first step toward that end.
A: Plants release oxygen as a by-product of photosynthesis, a process in which carbon dioxide is converted into sugar. The sugar is then used as an energy source for the plant. When oxygen is produced through photosynthesis, it is released by the plant into the atmosphere. The sugars produced by photosynthesis are utilized by combining them with oxygen through a process called oxidation. Photosynthesis chemically converts sunlight into energy after being collected by special cells in their leaves known as chloroplasts.
The role that plants play in the carbon cycle is to absorb carbon  dioxide and release oxygen as part of the process of  photosynthesis.Humans on the other hand, absorb oxy â¦ gen and release  carbon dioxide through the process of respiration.Answered. In Arthropods.ombustion, or burning, of fossil fuels (coal, oil and natural gas) in industry, transport and the generation of electricity, releases extra carbon dioxide (CO2). CO2 is a gre â¦ enhouse gas that is causing global warming, and this extra amount is too much for the carbon cycle to deal with. 5 people found this useful.