Perhaps the most important use of tin, historically, has been to make bronze — an alloy of copper and tin or other metals — that changed civilization by ushering in the Bronze Age. People began making or trading for bronze tools and weapons at different times, depending on geography, but the Bronze Age is commonly accepted to have started around 3300 B.C. in the Near East.
An Ecosystem is made up of all the living and nonliving factors in an area.
Why not an Asteroid nor a continent?
An asteroid is any small rocky object in the inner solar system.
A continent is one of several very large landmasses of the world. Such as North and South America, Australia, Africa, Europe and Asia.
Hope this helps you!
Can i get a large fry and a big mac
<span>C + O2 → CO2
(8,376,726 tons) x (0.80) / (12.01078 g C/mol) x (1 mol CO2/ 1 mol C) x
(44.00964 g CO2/mol) = 24,555,054 tons CO2</span>
Independent variable is fertilizer I think I'm not sure I'm in a rush.