One type of density change is mass over volume.
Answer:
Ion i think
Explanation:
I think ion's contain more negative energy from electrons and since it's -18 and 9+ it would be -9 if u add them up
No. Medical progress is allowing us to progress and evolve in different ways. That is the only difference. Having medical progress and good medical care allows us to pursue different types of activites we wouldn't be able to pursue otherwise. This at the same time brings a different type of evolution.
A scientific experiment, in the form of the scientific model, is a testable model used to seek explanation for natural phenomena.
Cancerous cells go through interphase so fast, that they are constantly multiplying in mitosis.