Name and define the main component of many commonly used types of glass

Silica is the main component usually found in glass. Silica is a chemical compound most commonly found in sand or quartz.

Explanation:

honestly g o ogle helped me for this one

this isnt an essay but a starting paragraph : ) just add what needs to be added. hope this somewhat

in this day and age you will most likely hear your peers tell you that your television shows can be bad for you. we want to listen to them because in ways it can effect our academics.

one fact we can all admit to, is staying up late when the tv is on. when wanting to succeed academically, you will want a full night of rest. tvs can be holding back on our sleep schedule and draining us of energy.

another way it can affect adolescents academics is exactly what type of show they are watching. if it is a show containing violence, they child may likely show some signs of bad behavior. its not all the time it happens but you know, most kids get what they say from the tv now.

sorry. my computer broke down and i had about 3 doctor's appointments. i'm just catching up now after reinstalling a router.

i think you best answer to this is d. some film directors were very picky about roles and lighting and and which side of the face the camera should catch. they were also picky about sound and background noise and chatter and music and all sorts of what we would consider trivial things. a stage director has to have all this ironed out before the curtain goes up. if he doesn't he better do it soon. if he doesn't notice, critics soon will, and they are not a very nice bunch.

e: both have the power to ask for rewrites. theater directors are always yammering about act 2.

c is true. both can ask for any number of things during rehearsals. the reason i wouldn't pick c is because a film director can make changes anytime during shooting, including when he thinks they ought to be done shooting.

b i didn't know what blocking was and i can't find a good description. if you have one and think b is true, go for it.

a a film director quite frequency chooses the leading lady or man. he may not have the final word, but he chooses. sometimes a theater director has no choice. a is generally not true.