<span>Errors can come from various sources: the obtainer of the data, the measuring instrument, the setting and etc. Errors are what makes your measurement invalid and unreliable. There are two types of error which is called the systematic error and the random error. Each error has different sources. Words that were mentioned –invalid and unreliable are very important key aspects to determine that your measure is truly accurate and consistent. Some would recommend using the mean method, doing three trials in measuring and getting their mean, in response to this problem.</span>
Corrosion control refers to measures that are implemented in various fields to control corrosion in:
Soil
Metal
Concrete
Water
Sand
Masonry
Covelant bonds form when 2 atoms do not have full outer shells.
Both of the 2 atoms then join together and share their electrons in order to gain stability have have a full outer shell
Answer:
by pumping blood throughout the body.
Explanation:
D it is only physical and not chemical
