Cellulose.
The main substance of a tooth is dentin, which is a hard tissue that makes up the majority of the tooth structure. It is covered by enamel on the outer layer and connected to the pulp at the center of the tooth.
This is a chemical property, as the burning of wood involves a chemical reaction that transforms the wood into ash, gases, and other byproducts, resulting in a new substance.
Wood ash (potash) is the main result of burning wood and potash can be used in the garden as a fertilizer. Also, if wood is slowly burnt (charred?) in a kiln, where oxygen is kept out, charcoal is produced.
Another diamond is the only substance hard enough to cut diamond.
Substance is commonly understood as a physical matter that makes up the universe and everything within it, possessing mass and volume. In a more philosophical sense, substance refers to the essential nature or quality of something that makes it what it is.
The substance which makes plants woody is lignin. The wood part of plants ( bark in trees ) is made entirely of xylem which is the transport vessel that carries water from the roots to the leaves. Since wood is made of lignified xylem which is very hard, it makes it woody and hard.
Calcium and phosphorus
Calcium carbonate
the hard fibrous material that forms the main substance of the trunk or branches of a tree or shrub
It is a hard wood.
It is a hard wood.
Chitin
exoskeleton
Keratin... it's a natural substance that makes the nail harden.
No, it is difficult to make a fire with wet wood because the moisture in the wood makes it hard to ignite and sustain a flame.
oak is a very hard wood
A substance is the essence of any object, so all wood or anything made from it is a 'substance'.