Serena is a research student who has conducted an experiment on the discoloration of marble. Read about Serena’s experiment. Then identify two flaws in her experiment’s design. Serena sees an article about the Taj Mahal, a medieval marble monument in India. She reads that the white monument is beginning to turn a dull yellow-brown. Serena admires the Taj Mahal and is eager to learn what might be causing the yellowing. She formulates a hypothesis that the yellow-brown tinge may be caused by air pollution from black carbon, brown carbon, or methane, combined with wind erosion.

To test her hypothesis, she decides to study the effects of these air pollutants and wind on white marble. She finds three identical pieces of white marble and exposes one of them to air containing black carbon, one to air with brown carbon, and one to air with methane. She also places a fan on two of the samples, varying the speed of the air stream in regular intervals. After a few days, the marble samples begin changing color, becoming grayish. Serena learns that air pollution caused the discoloration. However, she is not sure how it became gray instead of yellow and what exactly caused the discol

answer; ///i believe that the correct answer is (c)odysseus journey home after the trojan

music always has an important role in culture and societies, infact for example rock’n roll music has conditioned different areas of pop culture above all in the 60s. in the modern american society its role is different.

unfortunately many think about how some unfortunate events happened to the columbine high school shootings can be related to rock music just because the teenagers involved listened to this kind of music.

i think that we can valorize the change to take refuge in this genre of music to keep on in everyday life, teenagers are comfortable when they can listen to a song about a specific problem. realizing that someone else is living your personal drama too can them to feel less lonely nowadays.

because everyone tends to get their feelings hurt if they don't agree with something someone is doing and vice versa. it's a major issue that needs to be dealt with, especially in the christian society. everyone thinks that christians hate gay people, because it is a sin, and christians "just hate everyone who sins and every one is going to hell for sinning"(saying that all in a sarcastic tone but i'm just going to go ahead and tell you why everything with that type of view on christians is wrong.

#1. christians do not hate gay people. and if they do, then that is their own personal problem. christians are not supposed to hate anyone. if you hate a neighbor (or any person basically), then that is as if you are hating jesus.

#2. being gay is in fact a sin according to the holy bible. it is in genesis. and no, the fact that it is a sin, does not mean that god hates you. he is grieved that a person is sinning against his word, but he still loves that person. in fact, christians are supposed to love everyone. we are supposed to love our enemies, but hate the sin they are doing. we love you and respect you, but we do not agree with every decision you make, is basically what i'm trying to say.

hope this you ! (:

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 !