Jet streams-Are fast flowing, narrow air currents found in the atmospheres of some planets, including earth.
Global wind belts-Are formed by 2 main factors which is the unequal heating of the earth by sunlight and the earths spin.
        
             
        
        
        
Answer:
Explained 
Explanation:
The first thing that the etiologist can do is try and culture bacteria from the tissue samples in the lab. And then study about the bacterium's properties and characterstics that are leading to causing diseases in the humans. 
 
        
             
        
        
        
Answer:
The measures which is taken by country need to prevent global warming are given below. 
1) The government of the country should planted more trees because plants are only organisms which reduces the concentration of harmful gases which causes global warming. 
2) Reduce the use of fossil fuels such as petrol, coal and methane gas. 
3) Use solar energy instead of fuel for the production of electricity and other industrial products.