Subsistence agriculture is a form of farming where a family or community harvests groups for their personal consumption while market-oriented agriculture relies on the harvest of cash crops
        
             
        
        
        
A. Buddhism, Confucianism, and daoism
        
             
        
        
        
Answer:
we need tropical rain forests because they produce oxygen and clean the atmosphere to help us breathe. They also provide us with medicinal plants and may be the source to cure deadly diseases.