1) The Paralympic Games, held immediately after the Olympic Games, showcase the athletic abilities of individuals with disabilities and promote inclusivity in sports.

2) The Earth's core is primarily composed of iron and nickel and is as hot as the surface of the sun.

3) Cricket, originating in England, is a popular sport played in many countries and is known for its distinctive rules and terminology.

4) The Amazon rainforest produces more than 20% of the world's oxygen.