What is the human body made of?

A picture of a human body

Q: What is the human body made of? A: The human body is built from trillions of cells. Similar cells group into tissues (muscle, nerve, epithelial, connective). Tissues form organs (heart, lungs, brain), and organs work together as systems (circulatory, respiratory, nervous, etc.). Chemically, the body is ~60% water, along with proteins, fats (lipids), carbohydrates, … Read more

Why are Mass and Weight not the same ? | Simple Physics Explained

Q: Why are Mass and Weight not the same? A: The difference between mass and weight is one of the most common sources of confusion in physics. Many people use the terms interchangeably, but scientifically, they mean very different things. So here is a clear definition of the terms. This mix-up often happens because both … Read more

How many parts does the Indian Constitution have?

Q: How many parts does the Indian Constitution have? A: Originally, the Indian Constitution had 22 parts. However, with amendments over the years, it now has 25 parts. Each part deals with specific aspects of governance, rights, and administration — from fundamental rights to the relationship between the Union and the States.