Explanation

• Geostationary satellites are located directly above the equator. 
• Altitude: About 35,786 kilometers (22,236 miles) above sea level.
• Speed and Direction: Moves from west to east, matching the Earth's rotation speed.
• Time Period: Exactly 24 hours (one rotation day). 

Last updated 26-07-2026 by NA

Explanation

• A vegan avoids animal products, including meat, dairy, eggs, and often other animal-derived products.

Additional information 

• Vegetarian: Does not eat meat, but may eat dairy and eggs.
• Carnivore: Eats only meat.
• Omnivore: Eats both plants and meat. 

Last updated 26-07-2026 by NA

Explanation

• Mathematics is widely known as the "Mother of All Sciences".
• Because it provides the foundation for scientific and technological disciplines.
• It is essential for physics, chemistry, engineering, economics, and computer science.
• Mathematical principles are used in measurement, calculations, modeling, and problem-solving.
• The word Mathematics comes from the Greek word "Mathema," meaning knowledge or learning.

Last verified on 26-07-2026

Explanation

• Anthropology is the study of human life, culture, and societies.
• It examines human origins, customs, beliefs, languages, traditions, and cultural development.
• Anthropology helps us understand how humans have evolved and how different cultures function.

Additional information:

• Sociology: Human society and social relationships.
• Psychology: Human mind and behavior.
• Biology: Living organisms and life processes.

Last verified on 21-07-2026

Explanation

• O⁻ (O Negative) is the universal donor blood group.
• It can be transfused to A, B, AB, and O blood groups.
• O⁻ blood lacks A, B, and Rh (D) antigens.

Additional information:

• Universal Recipient: AB⁺ (AB Positive)
• ABO Blood Groups: A, B, AB, O
• Rh Types: Positive (+) and Negative (−)
• Total Common Blood Groups: 8 (A⁺, A⁻, B⁺, B⁻, AB⁺, AB⁻, O⁺, O⁻)

Last verified on 14-07-2026