Question: What is the final step of the following process: -  People breathe and expel carbon dioxide - Engines produce carbon dioxide - Living things produce waste - Waste decomposes - Decomposition produces methane - Water evaporates - Water vapor joins the atmosphere
Answer: Carbon dioxide, water vapor and methane are greenhouse gases

Question: What is the final step of the following process: -  Sunlight passes through the glass into the greenhouse - The plants and floor absorb the the sunlight - The absorbed sunlight is converted to heat - The heat cannot escape the glass - The heat is trapped in the greenhouse - The hot air rises - The colder air at the top is pushed to the bottom
Answer: The colder air is then warmed by the floor and the plants.

Question: What is the final step of the following process: -  Someone is infected with bacteria - That bacteria begins to grow and reproduce inside the cells - The dividing bacteria begin to make toxins - Those toxins damage your cells
Answer: