Plants and Animals!
Two things needed to make a rainbow are sunlight and water droplets in the air. As sunlight passes through the water droplets, it is refracted and dispersed into its different colors, creating the visible spectrum of a rainbow.
Glucose and oxygen
Two eggs and Two Sperm.
It depends on what you like. If you like big adventure, go for 1.2.5. It has the end, jungles, and other cool things. As for 1.8, no end, no jungles or iron golems, ect. You can check the related links below for the version history of the two versions.
theres two different types: survivalists: there the ones that survive by the things around them and the adventurists: these go on and search jungles for different types of species and plants and all other things.
They needed a keep because that was the strongest part of the castle and the portculis.
Land & Trade
soil and sunlight
Heat and pressure
Yoda and Mace Windu
Carbon Dioxide and Water
magnitude and richter