Introduction to Crops and Farming

Basic Practices of Crop Production

Preparation of Soil

Recap

Microorganism Basics

Friendly Microorganisms (Beneficial Uses)

Harmful Microorganisms (The Foes)

Food Preservation and Nitrogen Cycle

Recap

Natural Resources Classification

Coal

Petroleum

Natural Gas and Conservation

Recap

The Process and Conditions of Combustion

Controlling Fire

The Structure of Flame

Fuel Efficiency and Harmful Effects

Recap

Deforestation: Causes and Consequences

Conservation Efforts and Protected Areas

Classification of Species

Reforestation and Paper Conservation

Recap

Modes of Reproduction

Sexual Reproduction: Organs and Fertilization

Asexual Reproduction

Recap

Adolescence and Puberty Basics

Changes at Puberty

Hormonal Control and Secondary Sexual Characters

Reproductive Phase and Health

Recap

Force: Definition and Interaction

Effects of Force

Contact Forces

Non-Contact Forces

Pressure

Recap

The Nature and Cause of Friction

Types of Friction

Friction: Friend and Foe

Controlling Friction (Increasing and Reducing)

Recap

Sound Production and the Human Voice

Sound Propagation (Medium) and Hearing

Characteristics of Sound: Loudness and Pitch

Noise and Noise Pollution

Recap

Conduction in Liquids (Good vs. Poor Conductors)

Detecting Weak Electric Currents

Chemical Effects of Current

Electroplating (Application of Chemical Effects)

Recap

Lightning: Electric Discharge on a Huge Scale

Transfer of Charge and Safety Measures

Earthquakes

Recap

Visibility and Light

The Laws of Reflection

Types of Reflection and Image Formation

Dispersion and the Human Eye

Recap