A halochromic material is a material which changes color when pH changes occur.
its useful so that you mak,e a mistake you can fix it again
Density is useful for identifying an unknown material because it is a physical constant. A physical constant is a unique characteristic of the material in question. This constant never change or vary with the shape or amount of the material/substance.
Biodegradable waste is more useful because it degrades. It breaks down into nutrients and organic material that is useful, like compost.
Chromosomes are are your genetic material. Without them you would not exist.
The changes talking place in our surroundings and which are useful to us are called Useful changes. The changes which are not useful but harmful are called Harmful changes
Any material is useful when someone uses it to make something.
A halochromic material is a material which changes color when pH changes occur.
changes both harmful and useful
Bauxite is aluminum ore, hematite is iron ore.
solidifying.
Natural Resources
The material is simply:felt. I hope this was useful to you!
Iron.
A thermometer and light meter are the most useful when measuring two environmental changes.
kid
its useful so that you mak,e a mistake you can fix it again