After holding the weight for so long, the muscle would get tired, in an effort to tell the brain to stop holding the weight because the muscle fibers cannot handle it any more. Lactic acid is a by-product during muscle contraction that leads to the pain.
Answer:
"Through the Tertiary period (from 65 Ma) the Earth's climate became cooler with frequent oscillations that increased in amplitude and led to a series of major ice ages in the Quaternary. Glacial advances and retreats over the Pleistocene resulted in global cycles of contraction, expansion and fragmentation of species ranges resulting in species extinctions, population bottlenecks and differentiation."
Explanation:
(Did offline will rewrite in my own words if you would like :)
Hope this helps
Hey!
----------------------------------------------
If your hypothesis is to be supported, the data should show that the hypothesis is true. If the hypothesis is unsupported then the data shows that the hypothesis is false.
----------------------------------------------
Hope This Helped! Good Luck!
As there are 2 OH atoms, with one oxygen (O) atom per OH compound, there are 2 Oxygen atoms
