Explanation:
Health, population, and environment are interrelated in many ways.
If we are observing one individual person and the health of that person we can see that the health of this individual is associated with the environment where that person is living. Rapid population growth is provoking massive environmental degradation because where there are much people, the environment can face great degradation.
The answer is services. The other three are all factors of production. You need land or a place to create your goods and services. You have to have capital to run your production and sustain it. Then you need labor or people who will produce the goods and services that you are going to sell.
Arthritis, specifically, Rheumatoid Arthritis.
Video calling a friend could improve your mental health because during these times some might be lonely. When you’re lonely you might have thoughts that you drown in so you need someone to talk too. It helps you not stay so locked inside because the stress builds up. If stress builds up it could lead to a panic attack or something worse. It’s always a go to because you should know they’ll always be there and help you and talk to you.
-Hope this helps.