দুর্ঘটনা মোট কত রকমের হয় ?
An accident, also known as an unintentional act, is an undesirable, incidental, and an unplanned event that could have been prevented had circumstances leading up to the accident been recognized, and acted upon, prior to its occurrence. Most scientists who study unintentional injury avoid using the term "accident" and focus on factors that increase risk of severe injury and that reduce injury incidence and severity.
is an undesirable, incidental, and an unplanned event that could have been prevented