chewing tobacco gum disease DVIDS - News About Gum Disease - Cocoa

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Tar is a sticky mix of particulate matter , aerosol residue , and toxic chemicals , including: Carbon monoxide Formaldehyde Polycyclic aromatic hydrocarbons (PAHs) Carcinogens (cancer-causing agents) Bottom line: Tar is loaded with harmful chemicals you dont want sitting in your lungs or clogging up your cilia the tiny hairs that clean your respiratory tract

Some manufacturers are experimenting with modular designs where the battery can be easily removed for recycling, or using biodegradable plastics for the outer shell

Results are available up to 2020