Top 10 causes of death worldwide. Of the 56.4 million deaths worldwide in 2015, more than half (54%) were due to the top 10 causes. Ischaemic heart disease and stroke are the worldâs biggest killers, accounting for a combined 15 million deaths in 2015. These diseases have remained the leading causes of death globally in the last 15 years.
photosynthesis removes carbon dioxide from the atmosphere, and cellular respiration puts it back. Photosynthesis releases oxygen into the atmosphere, and cellular respiration uses that oxygen to release energy from food.
They're basically opposites of one another. In photosynthesis, light energy, carbon dioxide and water react to form glucose and oxygen. In cellular respiration, glucose and oxygen react to form carbon dioxide and water, releasing energy that the cell can use to do work. What happens to the carbon atom: transitioning between photosynthesis and respiration.