You know that during cellular respiration, energy is converted from glucose, in the presence of oxygen, into numerous ATP molecules. Glucose contains lots of energy, but that energy must be converted into a form usable by cells.
Answer: Our atmosphere is about 78% nitrogen and 21% oxygen, with traces of other things like water and carbon dioxide. It's an odd mix compared to the atmospheres of other planets. Jupiter and Saturn are dominated by hydrogen and helium, The thick atmosphere of Venus is about 96% carbon dioxide, and only 3% nitrogen, which is about the same ratio as the thin atmosphere of Mars. So why is our atmosphere so dominated by nitrogen?
It wasn't always this way. Like most planets Earth's earliest atmosphere was dominated by hydrogen and helium. These two elements are by far the most abundant in the Universe. About 92% of the atoms created by the big bang were hydrogen, and most of the rest were helium. All the other elements on the periodic table are formed through astrophysical processes such as nuclear fusion in the heart of a star. To this day they make up only a small trace of cosmic elements.
Explanation:
The typical male wild mountain lion can weigh anywhere from 115 to 220 lbs (around 53 to 100 kg)
The average weight for the male lions is 62 kg
Meanwhile, typical female wild mountain lion can weigh around 64 - 141 lbs (around 29-64 kg) with the average of 42 kg.