Answer:
Small external openings of lungs help in two ways:
1. It helps in trapping the dust and pathogens like bacteria, fungal spores et cetera. Larger opening would provide dust and pathogen a wider area to enter into the body.
2. The smaller opening prevents the drying of the respiratory membrane. A moist membrane is essential for the successful exchange of oxygen and carbon dioxide in the lungs.
Answer:
no They exhibit the highest per capita resource consumption................................... Overpopulation is more common in LDCs, but typically per capita resource consumption is higher in MDCs
Explanation:
