The answer is stroke. This means that formation of plaque in the blood vessels that serve the brain cause thickenning of the inner walls of the vessels. When the plaque ruptures, a blood clot forms and blocks blood passage to a particular region of the brain served by the vessel. This stifles oxygen supply to the respective part of the brain leading to the death of the cells in the region.
I would break the bones and see what kind of fossils are inside
The primary function of the carbon cycle is to recycle the supply of carbon on Earth.
Microevolution includes evolution at the population and community level.
Groups of pigments that capture light energy are located on the chlorophyll in chloroplasts in the cells.