The correct answer is the release of free radicals. In accidental injuries such as a pulled muscle, there will be a subsequent inflammation and the inflammatory process involves the release of inflammatory mediators which then will increase the migration of inflammatory cells (i.e. neutrophils, lymphocytes) on the site of inflammation. This influx of inflammatory cells will produce a large amount of free radicals (i.e. hydrogen peroxide, superoxide ions) which then will damage DNA.
Diffusion is the spontaneous movement of gases, without the use of any energy or effort by the body, between the gas in the alveoli and the blood in the capillaries in the lungs. Perfusion is the process by which the cardiovascular system pumps blood throughout the lungs.
Answer:
The correct option is C, a clam shell have a good possibility of being preserved because it has a hard body.
Explanation:
In evolutionary studies, preservation are made in the form of fossils or remnants.
For an organism to be preserved, it must not decay early and it should be hard enough. When an organism is buried quickly then it will take more time to decay and hence will have more chances to be preserved.
As the clam shells are hard so this quality makes them ideal enough to be preserved.
