A spring - also an electromagnet. Also know as a slinky!
Biotic are living organisms and abiotic are non living things such as rocks water soil
hope it helps please brainliest
There are two big advantages of using molarity to express concentration. The first advantage is that it's easy and convenient to use because the solute may be measured in grams, converted into moles, and mixed with a volume.
The second advantage is that the sum of the molar concentrations is the total molar concentration. This permits calculations of density and ionic strength
