Explanation :
The modern form of calculating any parameter is called the international system of units.
Meter, kilogram, Newton etc are the SI units of length, mass and force respectively. To express any quantity it is required to first convert it into SI units.
The length, breadth, distance and height of an object is measured in meters.
For example, Newton is the SI unit of force. Force is the product of mass and acceleration. The SI unit of mass is Kg while the SI unit of acceleration is 
. So, the Newton is equivalent to 
.
Answer:
4. cannot be made by the body and therefore must be consumed to maintain health.
Explanation:
Essential nutrients are nutrients that our body cannot synthesized and also those nutrients our body cannot produced in sufficient quantity, for the normal functioning of the body. These nutrients have to be obtained from the food we consume to support our life and health.
Essential nutrients obtained from food include carbohydrates, fats and oils, proteins, water, as well as certain vitamins and minerals. These essential nutrients that we get from our food are needed for good growth and development, prevention of diseases, as well as for maintaining good health.
