Different metabolism - different work.
how do you know how much food you need for a certain amount of people (200)
Because they have different sizes and need different amounts of food to fill up their body in order to not feel hungry.
By knowing to eat les amount of food .
If you are planning a large event like a wedding or a party, then it is important to how much food to order. You need to determine how many people will be attending the event. You also need to know the type of food that you are ordering. For instance, pasta can feed a lot more people then steak. It is important to always have a little extra on hand for unexpected guests or even the workers. Once you have a good head count you can determine a portion size and multiply that by the amount of people coming to get the amount of food you need for your event.
Food shortage is when there is not enough food. When the amount you have does not equal or exceed the amount that you need, you have a shortage. In this case, the shortage is of food.
Fast-moving predators need a large amount of food because they burn more energy when thy are hunting. They need more food, to supply the greater amount of energy they use.
because people need to know how much calorie consumption not to damage your health and have a healthy life
There are quite a few different things that Canadians usually need. These people need water and food just like everyone else.
an astronout needs the same amount like an normal person on earth just different contents
Yes, everyone needs the right amount of sleep or your brain cannot function right. Your body can also go slower and ache more because their tired. You do need the right amount of sleep but babies are different than kids, and kids are different from adults, and adults are different from elderly people.
People need to transport food so that other people can have food. Some areas grow enough food to feed other people in other areas.
We all need different amounts of food and different types because our body are all different some of us will have health conditions that need different levels of certain food groups. Take for example someone with diabetes they cant eat chocolate unless they buy diabetic so they will find the source of energy that we get from eating chocolate in other foods. Also weight issues take for example someone who is overweight will need to eat less and someone who is anorexic will need to eat more.