Nitrogen 75%
Oxygen 21%
Other gases exist in lesser quantities
Modern, human-caused climate change is escalating the threats that make sea walls necessary. Sea levels are rising, putting communities at greater risk from floods. Storms are intensifying, causing more and more sand to erode from beaches.
The area closest to the core is the densest
Hope this helps!
Answer:
Fossil Fuels aren't renewable
Explanation:
Air and water move in cycles, so they are renewable. Fossil fuels formed when prehistoric organisms died and were buried by layers of rock.
