Answer:
I am not sure what you are asking but when pH is alkaline it will change the litmus paper to that blue color.
Answer: false
Explanation: Only plant cells have a cell wall. All feels have a cell membrane
Answer:
SI system consist of standard units of measurement that are defined by International System Of Units.
Explanation:
SI stands for Standard International. It consist of total 7 units that are accepted internationally,
Two advantages of SI units are:
- SI unit is rational system of units, that means one unit denotes one physical quantity.
- SI units are internationally accepted which makes researchers and scientist calculations
