In 1844, Charles Goodyear obtained the first patent for a rubber condom.
Did you know?
Always store hazardous household chemicals in their original containers out of reach of children. These include bleach, paint, strippers and products containing turpentine, garden chemicals, oven cleaners, fondue fuels, nail polish, and nail polish remover.
Did you know?
There are more bacteria in your mouth than there are people in the world.
Did you know?
Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
Did you know?
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
concept map : atoms and molecules
Living with Floods
Living will.
Atoms
Living and non living things
A very small sampling of organisms in an arctic food web on land.