Natural indicators are important because they relate information about the acidity or alkalinity of a substance by demonstrating a shift in color which inform the observer about the pH level of the concerned material.
Natural indicators possess useful chemicals which relate information about pH level and because of this they are used in manufacturing of chemical indicators.<span />
Because we learn over time how things work and how they don't work.
Answer: Option A
Explanation:
Homosapiens also known as Herto Man. It is the name given to the number of the early modern human fossil which was found in the 1977 which was dated to be around 160,000 years ago.
Palaeoanthropologists determines the skeletal that was found belongs to the extinct species of homo sapiens that once lived in Pleistocene Africa.
The skeletal was dated using the potassium dating which helped to known the age of the fossil.
In order to turn percent to a fraction, first, we write it as 48/100. Then, from there we simplify it to the simplest form.
48/100 = (48/4) / (100/4) = 12/25
So, 48% <span>expressed as a fraction in simplest form is 12/25.</span>
