What is the chemical formula for ammonia?

What is the name for the layer of loose, unconsolidated material covering the Earth's surface and consisting of mineral and organic particles?

Which gas is produced during the process of photosynthesis in plants?

Which law of motion states that the rate of change of momentum of an object is directly proportional to the net external force acting on it?

What is the SI unit of electric potential difference?

Which star, known as the North Star, is often used in navigation due to its proximity to the celestial north pole?

In a chemical equation, what do the coefficients represent?

What is the term for the process by which rocks are broken down into smaller particles through the action of wind, water, or ice?

In the human digestive system, where does the majority of nutrient absorption occur?

In the human digestive system, where does the process of mechanical digestion primarily occur?