PLS HELP! Which is one of the big ideas that guides Earth science?
Earth's waters
Earth in the universe
Earth in the solar system
evolution of life on Earth

evolution of life on Earth

Explanation:

Life began on Earth at least 3.5 to 4 billion years ago, and it has been evolving ever since. At first, all living things on Earth were simple, single-celled organisms. Much later, the first multicellular organisms evolved, and after that, Earth's biodiversity greatly increased.

Earth in the Solar System is the right answer

Explanation:

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).

if you add everything up correctly you should get 69 i got this because 50 plus 19 is it