Stroke (which is a cerebral embolism, or cerebral vascular accident) is characterized by damage to a part of the brain (which could for example the sensory cortex) as a result of obstruction of a vessel (ischemic stroke or cerebral infarction) or by the rupture of a blood vessel and the accumulation of a pocket of blood (hemorrhagic accident or cerebral hemorrhage).
The sensory and visual symptoms of the stroke appear 48 hours after the incident, Doctors must act quickly to save the patient from irreversible damages.</span>
Decline in the global population of amphibians is due to multiple reasons which include:
A moist ecosystem is necessary for amphibians especially for the purpose of their reproduction. The drainage of the wetlands deprives them of their habitat.
Pollutants adversely affects the survival of the gametes, tadpoles or the adult amphibians by acting as toxic agents and inhibiting their normal metabolic function.
Infectious diseases often cause their death resulting their population to decline.
Global climate warming affects their normal metabolic growth and development and hence causes their population to decline.
