¿Cuánto pesa el encéfalo del hombre y cuánto el de la mujer?​

The average brain weight of the adult male was 1336 gr; for the adult female 1198 gr.

Spanish: El peso cerebral promedio de los varones adultos fue de 1336 gr; para la hembra adulta 1198 gr.

it would affect precipitation by causing flooding in some areas of the world due to climate increasing, causing the glaciers in the northern and southern pole of our planet to melt.

i wish you would have provided choices to simplify it and allow me to give an exact answer.

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).