Answer:
The percentage of carbon dioxide in the air is 0.04%
The hormone testosterone promotes sexual desires in both males and females
Infinity, the concept of something that is unlimited, endless, without bound. ... Spatial and temporal concepts of infinity occur in physics when one asks if there are infinitely many stars or if the universe will last forever.
The abundance of abiotic factors, like light, water, and shelter, limit the amount of biotic factors.