First of all, only hermaphrodites can produce offspring by themselves, and most of the time, they end up being genetically mutated, but either way it is called asexual reproduction
Nitrogen fixation is the process by which nitrogen gas from the atmosphere is converted into different compounds that can be used by plants and animals. There are three major ways in which this happens: first, by lightning; second, by industrial methods; finally, by bacteria living in the soil.
When something is cooled, its atoms compact and become more dense. vice versa for heating
