Science & Mathematics - 27 December 2006

We are doing a science project and our teacher requires us to have a control group. My problem is I don't know what a control group is.
My project is: Does chewing gum increase your mouth's bacteria?
I'm comparing the bacteria growth of chewing gum after meals and not chewing gum after meals. I think my control group would be gum..right?

Also, please help me on how to explain my control group in a detailed format.

Great thanks. All help is appreciated. =)

2006-12-27 07:46:13 · 8 answers · asked by hello 1 in Other - Science

2006-12-27 07:45:59 · 5 answers · asked by JAMES 4 in Physics

Are we Coloradans gonna suffer another blizzard on this Thursday(tomorrow)? Any information would be helpful. Thanks...

2006-12-27 07:44:07 · 9 answers · asked by Eko 2 in Weather

(g,h,i,j,k,l) has a mean of A and a Standard Deviation of B.

What is the mean and standard deviation of (5+g, 5+h, 5+i, 5+j, 5+k, 5+l)?

Please show your work!!

2006-12-27 07:43:10 · 2 answers · asked by yellowrainbowgreen 1 in Mathematics

All the scientific geological and mathematical evidence makes the story to be absolutely ridiculous.

2006-12-27 07:42:30 · 15 answers · asked by bill r 1 in Earth Sciences & Geology

dropped a crystal into it, the whole mixture just went solid in about 2 seconds, could anyone explain this and tell me what he might have used?

2006-12-27 07:41:43 · 8 answers · asked by maikellysummit 2 in Chemistry

Convert Sodium chloride is produced when sodium
metal reacts with chlorine gas to a formula equation

thanks a lotttttttttttttttt :D

2006-12-27 07:40:40 · 3 answers · asked by Anonymous in Chemistry

(a,b,c,d,e,f) has a mean of X and a Standard Deviation of Y.

What is the mean and standard deviation of (5a, 5b, 5c, 5d, 5e, 5f)

2006-12-27 07:39:07 · 3 answers · asked by yellowrainbowgreen 1 in Mathematics

I work at a small doctor's office. This morning a patient who had pain in the chest "THINKS" he had stomach problem, but his ECG revealed maybe he has proximal ventricular fibrillation. The doctor refered him to a cardiologist, explained what could be happening to him, but the patient looks like he's not listening what doctor is saying at all. I'm convinced he'll not be bothered to see the cardiologist at all. Is there anything wise that I can do, to help him?

2006-12-27 07:38:03 · 4 answers · asked by The Catalyst 4 in Medicine

the strongest i know of that we can go to local stores to buy is J-B Weld i use it all the time but i would like to know how it works and what makes it so strong it has a tensile strenght of 3960 psi why is it so strong is there anything stronger

2006-12-27 07:37:44 · 3 answers · asked by Talking Hat 6 in Chemistry

2006-12-27 07:32:27 · 12 answers · asked by Anonymous in Astronomy & Space

Most flexor muscles are located on the anterior aspect of the body and most extensors are located posterior. What extensor-flexor musculature is the exception to this generalization?

2006-12-27 07:30:42 · 4 answers · asked by Steenskees 2 in Biology

with working out please

2006-12-27 07:21:46 · 12 answers · asked by Anonymous in Mathematics

2006-12-27 07:19:57 · 12 answers · asked by Anonymous in Earth Sciences & Geology

A study was conducted in the U.K. in 2001 which determined that the gene that causes red hair + freckles in people is a very old gene (dating 50,000 - 100,000 years).
Modern man (Cro-Magnons) didn't come about until approximately 40,000 years ago, so it is believed that the red hair gene comes from Neanderthals. What are your thoughts on this?

I think it's possible, especially because Neanderthals lived in a very cold environment (Ice Age Europe). Red heads are pale, and pale skin is associated with cold environments. I could easily picture Neanderthals being pale and having red hair.

2006-12-27 07:18:32 · 9 answers · asked by Anonymous in Biology

you know how they say only 5%-10% of our brain is active ??

2006-12-27 07:17:22 · 10 answers · asked by Anonymous in Medicine

2006-12-27 07:16:30 · 6 answers · asked by hill walker 1 in Earth Sciences & Geology

2006-12-27 07:08:04 · 13 answers · asked by nani b 1 in Mathematics

There have been a lot of astronomical missions lately to find evidence of intelligent life in outer space. If one of those missions is successful and find a civilization at a nearby star, what should we do about it?

2006-12-27 07:06:16 · 6 answers · asked by Anonymous in Astronomy & Space

2006-12-27 07:04:58 · 2 answers · asked by Steve 2 in Mathematics

When you peel the orange, how many pieces do you peel off? Which one is larger and which one is smaller?
How many sections does your orange have?
Do you have an even number or odd number of oranges?

2006-12-27 07:04:15 · 2 answers · asked by awwisme 1 in Botany

2006-12-27 07:00:21 · 4 answers · asked by Lily 1 in Earth Sciences & Geology

i need help on my science fair project and if you have other science projects dealing with sound that would be great.

2006-12-27 06:52:48 · 7 answers · asked by james s 2 in Physics

For example: Some people are living that today.....in Africa, some parts in Asia and in many other places......what would happen to YOUR way of life if this has occurred to you...

2006-12-27 06:45:39 · 14 answers · asked by kogmu 3 in Earth Sciences & Geology

The Steady-State theory vs. The Big Bang theory which one to believe?

2006-12-27 06:41:37 · 28 answers · asked by Leandro 2 in Astronomy & Space

2006-12-27 06:41:27 · 2 answers · asked by Venkitash P 1 in Earth Sciences & Geology

Putting all jokes aside, I was just wondering how accurate your weatherman was. If he was usually pretty right on the money, or if he was usually way off base? Trying to what my weatherman is like compared to the rest of them out there. Ours is usually pretty good, though he likes to save his butt saying 40% chance, etc. but we don't know where that 40% is here in Georgia...is it the same with you?? Thanks ahead of time!!

2006-12-27 06:39:59 · 4 answers · asked by atlantagal 5 in Weather

Preferably grounded answers but since the topic is wide ranging, all contributions welcome.

Scientists opinion are that these were pre-historic large skeletons that resembled humans. Myth or fact ?

Folk myth and religion purport that these are fallen angels. The easiest readily available source are from palimpsests and scrolls making up Genesis.

Kindly support answers from historical and ancient text where possible and available.

2006-12-27 06:39:06 · 10 answers · asked by pax veritas 4 in Other - Alternative

2006-12-27 06:38:51 · 28 answers · asked by kim c 1 in Mathematics

2006-12-27 06:38:08 · 11 answers · asked by ? 1 in Astronomy & Space