भारत में जाति-प्रथा सदियों से प्रचलित है जो विभिन्न परंपराओं व अवधारणाओं द्वारा पोषित होती रही है। निम्न में से कौन सा/से शब्द भारतीय जाति-प्रथा से संबंधित है/हैं
1. संस्कृतिकरण
2. विलोम
3. अस्पृश्य
4. सिद्ध

कूट:

केवल 1, 2 तथा 4

केवल 1, 2 तथा 3

केवल 3 तथा 4

केवल 1 तथा 2

• The primary functions of lungs are to transport oxygen from the air into your bloodstream while taking away carbon dioxide, which is released during breathing out.

• Most vertebrate animals (animals with spines) have two lungs.

• The lung on the left side of human body is divided into two lobes while the lung on right side is divided into three. The left lung is also slightly smaller.

• The lungs are the largest organ in the body and the only organ inside the body that is exposed to the outside.

• Human respiratory system breathes in between 2,100 and 2,400 gallons (8,000 and 9,000 liters) of air each day.

• The brain directs the rate of inhalation and exhalation of the lungs. It can quickly sense the concentration of oxygen in the air, and increases or decreases the rate of respiration accordingly.