1) Oceans play a crucial role in regulating the Earth's climate by absorbing and storing large amounts of heat and carbon dioxide.

2) Mount Kilimanjaro in Tanzania is the highest mountain in Africa and attracts climbers from around the world.

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

4) Male seahorses are the ones who give birth to their offspring.