Earth,the favourite of all of us is even known as,"the blue planet"because it's 70%is made up of water.long time ago there was time of ice age when the whole planet was covered in thick layers of ice, and that was the age when there were mamoths.
It has the perfect tilt in its axis which makes humans exist on it. the tilt helps lets the ice melt in summer and get transformed to water,into the ocean. The positioning of it, helps to get the perfect amount if sunlight from the sun for humans. Avaibility of the diffrent types of gasses for our survival.
Much of Earth's water is thought to have come from asteroids impacting the planet early in its history.The surface of the very young Earth was initially an ocean of magma. Hydrogen and noble gases from the solar nebula were drawn to the planetary embryo, forming the first atmosphere.And then even the origin of life started from the oceans,at that time there were many active volcanic activiteis happening on Earth