A property, or maybe something specifically, an empirical
It is its property.
inferring something
Looking at something- you observe it.
Physical changes are those that can be observed.
well bacterias tend to go into a life cycle that describe their characteristic, the first part of the bacteria life cycle is something called a lag in-which the bacteria stay stationary and observe it environment, 2nd is the logarithmic exponential, in the logarithmic exp. the bacteria start using resources available to it and multiply it self- this is called (mitosis) and as it does that, it accumulates waste, and as the waste accumulates and as the bacteria resources isn't increasing it reaches the stationary phase were it just stay alive without much growth and eventually it decline and reaches the death phase and die.so if you try to describe their characteristic you should say they observe their surroundings, and use all the resources available to it to multiply it self. It also tend to release waste, and try to maintain it self from dying.
When you can observe something's characteristics, they are called physical traits. These are the things you can see, hear, smell.
A characteristic of something you are able to observe is that you are actually able to see it. It is also imperative that you would be able to notice changes in its appearance or behavior.
It is its property.
Rate of Erosion
I believe we only observe.
rate of erosion
Getting data
inferring something
Yes. Specifically, the sense of touch.
A characteristic is, something that a person does for a living.
I agree.
to look at something ;to find out what it is