supposed while you are hiking with friends, you find a lump of metal in steam that is a yellow color. Your friends say "That's a gold" how could you tell if it really is gold?

What are genotypes? what are phenotypes?

The united states produces an average of 429 billion pounds of food annually. about 133 billion pounds of that food ends up as waste.the percentage of food that the united states wastes each year is %.

(99 points) be serious! how do farts work? how do you fart without it stinking? serious answers only