Mildew is a fungus that grows in wet areas and can slowly grow from microscopic to large stains in showers and sinks. Researchers are studying different sprays that could be used to slow down the growth of mildew. They set up different showers that are exactly the same and expose them each to water with the same microscopic amount of mildew. They then spray some showers with mildew-preventing sprays and observe how fast mildew grows over time.

Which shower would most likely be the control group in this study?

the shower sprayed with many test sprays
the shower not exposed to any mildew at all
the shower not sprayed with any mildew-preventing spray
the shower sprayed with a test spray that is already known to work

biological/genetic factors means they were born or predisposed to have something. nothing can really change it, and you can't really do much to "fix" it. it isn't something learned

these are the biological factors:

adrian is relatively tall and he is on the basketball team

(adrian can't ever stop being tall or force himself to be tall. likely one or both of his parents are tall as well and they passed on the tall gene. he probably does basketball because he is tall)

the rest are environmental/cultural factors. these are things that are taught to us. for example, cynthia wasn't born saving pocket money, her family most likely taught her this (environmental factor)

hope this !

i am 99% sure that the increase of goods was because of nafta nafta stands for the north american free trade agreement to lift tariffs

it would be a. that is the only one i could think of

the adoption by russian princes of the mongols' diplomatic rituals