Answer:
The presence of air in the pleural cavity
Explanation:
A pneumothorax occurs when air builds up between the lung and the chest wall. In consequence, pneumothorax occurs when air gets into the pleural cavity (i.e., the space between the lung and the chest wall) and causes a fully and/or partially collapsed lung. Some of the most common symptoms of pneumothorax include shortness of breath (respiratory distress), rapid breathing, rapid heart rate, fatigue, agitation, dry cough, etc. Pneumothorax can be caused by a chest injury, an accident during a medical procedure, damage from underlying lung diseases, etc.
 
        
             
        
        
        
Answer:
liquid- enzymes 
protein- fat
carbohydrate- saccharides 
nuclei acid- dna or deoxyribonucleic acid
 
        
             
        
        
        
Answer: Electromagnetic waves
Explanation: The main property of the waves is the way how they propagate or travel in medium The waves which can travel without a medium is said to travel in vacuum or air.
 
        
             
        
        
        
We need the options in order to answer
        
             
        
        
        
Hot: drought
Cold; dead animals
rainy: flood
cloudy: thunderstorms
mostly natural disasters: everythings dead