Answer: 1 is Health is a state of complete physical, mental, and social well-being and not merely the absence of disease or infirmity.”
2 is   There are basically six components of health history,
Physical health. ...
Social health. ...
Environmental health. ...
Emotional health. ...
Spiritual health. ...
Intellectual/mental health.
3 is no that person is in good physical health but there eviromental health isn’t good.
4 is a change in a living body (as of a person or plant) that prevents it from functioning normally : sickness.
Explanation:
 
        
             
        
        
        
A. to find out if a hypothesis is correct.
        
             
        
        
        
Carbon dioxide is transported in the blood in three ways: (i) dissolved in solution; (ii) buffered with water as carbonic acid; (iii) bound to proteins, particularly haemoglobin. Source: https://academic.oup.com/bjaed/article/5/6/207/331369 
 
        
             
        
        
        
As we get closer to the coral reef, there are going to be several things we notice. The first thing we notice will be the large number of coral that seem to have lost their color, turning bright white. In addition, if we are in Florida, we may see something called the stony coral tissue loss disease. This disease has been of great concern in recent years in Floridian waters. Looking at these two changes, we can see that both are from the impact of climate change. As the water warms, the stress on the coral reaches a high point and they start to bleach and become more susceptible to several diseases.
I hope I've helped! :)