The endospores of the eukaryotes and prokaryotes are extremely important for the sake of the cells in terms of heat protection. It helps them get fully protected from harmful radiation and high temperatures which can destroy them.
Answer:
Food gives you energy, but oxygen is needed to break down the food into pieces that are small enough for your cells to use This is known as cellular respiration and it is the process of oxidizing food molecules, like glucose, to carbon dioxide and water