An atom is the most basic unit of matter
Competition will increased because more organisms will be competing for resources
It turns out that many materials can be solid at a higher temperature if the pressure is also higher. so even though it is hotter in the inner core the pressure in the core is also higher and you can have a solid iron nickel instead of liquid
AUGCGAGGUAUAGCGAUUAGCGGCCUAGUCUAA because A goes to U; T goes to A; G goes to C; C goes to G.