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.
A substance that makes somthing disslove is called a solvent.
This substance is called as neurotransmitter. Here it is acetylcholine.
Calcium
yes because it is not a hard corn anymore it is a fluffy substance
Cellulose.
Calcium and phosphorus
Calcium carbonate
Lactic acid. While it doesn't actually cause pain by itself (it causes muscle fatigue), a buildup of it can.
exoskeleton
Chitin
Keratin... it's a natural substance that makes the nail harden.
A herniation is the protrusion of muscle substance through a tear.
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.
the muscle is damaged and makes it hard to move around.
Enamel, it is the hardest substance in the human body.
Clay makes good bricks because it is a stable substance. This substance gets hard and withstands a great amount of pressure.