Uv rays are useful as they help in creating ozone. They are helpful as they are highly energetic waves.
agar
Every element has a specific number of protons, which is how an element is identified. That gives its atomic number. The number of neutrons can vary, and therefore is not useful in identifying an element.
It is usefull because of it's abundance and for the fact it can have 4 covalent bonds making it a very stable element in molecules and polymers.
The number of electrons an element has determine the organization. This table helps in making predictions about how an element will chemically react.
chlorine
zinc
Algebra is useful in creating formulaes!
There are a number of useful tools for organizing data. These include spreadsheets, creating graphs, and creating folders to organize all of your documents.
it is easy
Be spontaneous
Uv rays are useful as they help in creating ozone. They are helpful as they are highly energetic waves.
Iron.
They can be feeling sick but to my knowlegde they cannot be physically sick. hope this is useful to you!
it is creating new useful software
Sulphur
the definition of an element is a useful resource that we use in our daily life an example such as oxygen if we did not have oxygen we would die