🧍‍♂️ What Is the Human Body Made Of?

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🧬 1️⃣ Tiny building blocks: Cells

• The human body is made of trillions of tiny cells
• Cells are like LEGO blocks 🧱
• Different cells do different jobs

Examples:

• Muscle cells 💪
• Nerve cells 🧠
• Blood cells 🩸

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🧫 2️⃣ What are cells made of?

Cells are made of molecules, and molecules are made of atoms.

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⚛️ 3️⃣ Important elements in the human body

Here are the main elements we are made of:

Element	Percentage	Why it’s important
💧 Oxygen (O)	~65%	Part of water and breathing
⚫ Carbon (C)	~18%	Builds all life molecules
💨 Hydrogen (H)	~10%	Part of water and energy
🔵 Nitrogen (N)	~3%	Makes proteins
🦴 Calcium (Ca)	~1.5%	Strong bones and teeth
⚡ Phosphorus (P)	~1%	Energy and bones

👉 Fun fact: You are made of star elements 🌟

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💧 4️⃣ Water is the biggest part!

• About 60–70% of your body is water
• Water helps:
  • Carry nutrients
  • Control body temperature
  • Remove waste

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🧠 5️⃣ Body systems working together

Cells form tissues, tissues form organs, and organs form systems:

• Digestive system 🍎
• Respiratory system 🌬️
• Circulatory system ❤️
• Nervous system 🧠
• Skeletal system 🦴

All systems work together like a team 🤝

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🌟 Fun facts for kids

• Your skin replaces itself every few weeks!
• Your bones are stronger than steel (for their size)
• Your body has more cells than stars in our galaxy 🌌

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🧠 Easy way to remember

Cells → tissues → organs → body systems → YOU

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📌 One-line summary

The human body is made of cells, mostly water, and elements like oxygen, carbon, and hydrogen working together.

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