After darwin concluded his voyage on the beagle, he proposed that the process of natural selection was a mechanism for:
a. sexual selection.
b. overpopulation of finches on the galapagos islands.
c. speciation.
d. evolution.
e. artificial selection.

"d.) carbon dioxide and hydrogen sulfide"

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).

yes

no

blue is scattered more than other colors because it travels as shorter, smaller waves. this is why we see a blue sky most of the time.

protein makes up the building blocks of organs, muscles, skin, hormones and pretty much everything that matters in your body.

some choices are:

peanut butter

seeds

eggs

yogurt

meats

fish

so pretty much meat, dairy, nuts, and grains.