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.
Photosynthesis and respiration work together in many ways. They both have to exist in symbiosis. Without photosynthesis, cellular respiration cannot occur, and without cellular respiration, photosynthesis cannot occur. The plant needs both photosynthesis and respiration to survive. Photosynthesis makes a storable energy source, while respiration converts for individual cells. But because of photosynthesis and cellular respiration, energy from the sun is converted into a ATP that fuels the work of plant cells.