What do you mean??? Huh sorry..
- Logging/Deforestation
- Overfishing
- Urban Development
- Oil/Fracking
- Mining/ Extraction
- Tourism
- Poaching
Answer:
it's Nitrogen. there is 78% of nitrogen in the atmosphere, 21% oxygen and others
Generally, the Earth is divided into spheres which include the "lithosphere" (land), "hydrosphere" (water), "biosphere" (living things), and "atmosphere" (air). The earth is divided into three layers based on chemical composition and these are the core, mantle and crust. In addition, the earth is also divided into physical properties which include lithosphere, athenosphere, mesosphere, outer core and inner core. Based on the given details, we can conclude that the atmosphere cannot be part of the lithosphere but instead, it is classified in a separate layer. The lithosphere only consists the outermost, rigid part of the Earth, which are the crust and the mantle. Hope this answer helps.
I would say that one reason is since developed countries are so advanced in every aspect...they have no time to reproduce, so there are no replacements for old people, hence the increase in the average population age.