Step 1: 💧 Water and 🌬️ Wind

Combine 💧 Water and 🌬️ Wind to create 🌊 Wave

Step 2: 💧 Water and 🌍 Earth

Next, combine 💧 Water and 🌍 Earth to create 🌱 Plant

Step 3: 🌍 Earth and 🌬️ Wind

Then, combine 🌍 Earth and 🌬️ Wind to create 🌫️ Dust

Step 4: 🌱 Plant and 💧 Water

Now, combine 🌱 Plant and 💧 Water to create 🐊 Swamp

Step 5: 🌱 Plant and 🌱 Plant

And then, combine 🌱 Plant and 🌱 Plant to create 🌳 Tree

Step 6: 🌫️ Dust and 🌊 Wave

As next step, combine 🌫️ Dust and 🌊 Wave to create 🏖️ Sand

Step 7: 💧 Water and 💧 Water

Combine 💧 Water and 💧 Water to create 🌊 Lake

Step 8: 🔥 Fire and 🔥 Fire

Combine 🔥 Fire and 🔥 Fire to create 🌋 Volcano

Step 9: 🌋 Volcano and 🌫️ Dust

Combine 🌋 Volcano and 🌫️ Dust to create 🌋 Ash

Step 10: 🌫️ Dust and 🌱 Plant

Combine 🌫️ Dust and 🌱 Plant to create 🌱 Pollen

Step 11: 🌳 Tree and 🐊 Swamp

Combine 🌳 Tree and 🐊 Swamp to create 🌱 Mangrove

Step 12: 🏖️ Sand and 🌊 Lake

Combine 🏖️ Sand and 🌊 Lake to create 🏖️ Beach

Step 13: 🌋 Volcano and 🌊 Lake

Combine 🌋 Volcano and 🌊 Lake to create 🏝️ Island

Step 14: 🌱 Pollen and 🌋 Ash

Combine 🌱 Pollen and 🌋 Ash to create 🤧 Cough

Step 15: 🏖️ Beach and 🌱 Mangrove

Combine 🏖️ Beach and 🌱 Mangrove to create 🦀 Crab

Step 16: 🤧 Cough and 🏝️ Island

Combine 🤧 Cough and 🏝️ Island to create 😷 Tuberculosis

Step 17: 😷 Tuberculosis and 🦀 Crab

Combine 😷 Tuberculosis and 🦀 Crab to create ♋ Cancer