What types of snakes are venomous? How does their venom work and what are the symptoms of a snakebite? Are there any snake species that resemble venomous snakes but are actually harmless? What precautions should people take to avoid snakebite incidents and what is the recommended first aid for snakebite victims? Additionally, are there any countries or regions known for having a higher population of venomous snakes? And finally, what are some interesting facts about venomous snakes and their role in the ecosystem?