Science & Mathematics - 28 December 2007

I. Environmental Change
II. Adaptation
III. Evolution
IV. Variation

A.I, II, III, IV

B. II, III, IV, I

C. IV, I, II, III

D. I, IV, II, III

E. III, I, II, IV

2007-12-28 07:59:28 · 3 answers · asked by Anonymous in Biology

2007-12-28 07:55:15 · 1 answers · asked by the g 2 in Earth Sciences & Geology

I have been invited to a rocket club to see model rockets launch, however I have extremely sensitive ears. How loud will this be, do I need to wear hearing protection?

2007-12-28 07:53:40 · 7 answers · asked by Anonymous in Astronomy & Space

2007-12-28 07:53:28 · 1 answers · asked by Anonymous in Earth Sciences & Geology

1. x(squared)+6x-10=0 2. x(squared6x+8=0

3.x(squared)-6x+10=0 4. x(squared)-6x-8=0

2007-12-28 07:53:07 · 5 answers · asked by Anonymous in Mathematics

2007-12-28 07:50:34 · 2 answers · asked by WendyB 4 in Astronomy & Space

2007-12-28 07:49:30 · 5 answers · asked by Anonymous in Mathematics

Dry ice feels like its dry when you hold it. It gives off what looks like a steam from the dryness.

2007-12-28 07:47:47 · 6 answers · asked by elise f 1 in Physics

2007-12-28 07:47:04 · 25 answers · asked by Thankful 1 in Medicine

2007-12-28 07:45:35 · 2 answers · asked by nc 3 in Mathematics

Is it a phase shift that results in a sine graph?

2007-12-28 07:44:35 · 3 answers · asked by Anonymous in Mathematics

x(squared)-x-56=0

2007-12-28 07:38:07 · 7 answers · asked by Anonymous in Mathematics

I just got the meade land and sky telescope and i dont really know how to use it. I was dissappointed to not observe any planets! Where do i look for the planets? What time of the day are they out? How do i see teh really detailed stars and planets through the telescope? Thanx

2007-12-28 07:37:56 · 4 answers · asked by Cali 2 in Astronomy & Space

Can we say -now- that the chance of us surviving on earth after the red giant comes, like is their any chance the sun won't become a red giant in about 5 billion years? i feel bad when i think about the sun becoming a red giant? any good comments (this is a real question, so pls give serious answers also)

2007-12-28 07:35:47 · 12 answers · asked by Anonymous in Astronomy & Space

2007-12-28 07:31:52 · 2 answers · asked by Jaspreet J 1 in Mathematics

2007-12-28 07:30:14 · 14 answers · asked by Anonymous in Mathematics

2007-12-28 07:26:09 · 8 answers · asked by ethology 4 in Geography

2007-12-28 07:24:30 · 6 answers · asked by subrat b 1 in Mathematics

I have to write a speech for Chemistry about Astronomy. I have no clue what to add to it for subject topics/categories.
They can be like... careers, about some other stuff in space, and so on...
Any other suggestions?

2007-12-28 07:19:18 · 8 answers · asked by ♫♪♫Lovin' It ♪♫♪ 3 in Astronomy & Space

2007-12-28 07:06:45 · 8 answers · asked by Anonymous in Medicine

1. The river boat, Alert, take six hours to travel 120 km upstream but only four hours to return. Find the speed of the current and the speed of the riverboat in still water.

Answer: 5km/h Current , 25 km/h riverboat
( I can not get the answer from the question )
Can some1 teach me how to find the answers step by step?


My other question is this.. ( i don't think we even learned this yet )

2. f(x) = x(square) - 1 and g(x) = x +1 , find f(g(x)) and g(f(x))?
( I don't get what this is .. but the answers are )

Answers: f(g(x)) = x(square) + 2x , g(f(x)) = x(square)




THANK YOU VERY MUCH !!

2007-12-28 07:01:09 · 6 answers · asked by KoF 2 in Mathematics

2007-12-28 06:56:42 · 7 answers · asked by sara 4 in Engineering

Whenever I turn on the TV I see loads of documentaries by loons like David Icke and Bob Lazar who believe that UFOs are piloted by little green men, but are there actually any serious scientists who believe this?

Has any "real" scientist ever published a serious paper in a science journal supporting the belief that UFOs are alien spacecraft? Or even given a speech in support of the idea?

If so, I'd really like to know which issues. I'd even like to know if any of the have published a serious peer reviewed paper against the idea.

2007-12-28 06:54:41 · 13 answers · asked by Anonymous in Physics

x – y + 2z = 13
2x + xy – z = -6
-x + 3y + z = -7

need coefficent matrix
inverse
transpose
determinant

need explanation so I can do it myself

2007-12-28 06:53:25 · 5 answers · asked by Anonymous in Mathematics

a skier starting from rest skis straight down a slope of 50. m long in 5.0 seconds. What is the magnitude of the acceleration of the skier?
thanks =D

2007-12-28 06:51:45 · 6 answers · asked by luhb u much!! 4 in Mathematics

or w.e
the comet hiting us thing.
are we really dieing?

2007-12-28 06:51:39 · 19 answers · asked by Anonymous in Astronomy & Space

2007-12-28 06:50:50 · 9 answers · asked by Ed H 3 in Paranormal Phenomena

2007-12-28 06:50:23 · 12 answers · asked by Eric S 1 in Botany

okay i found a spider that i think was a brown recluse and i am worried that my baby sister may get bitten by one if it was one and i want to know if anyone could identify it

okay here is the desciption, well it was pretty dark brown and there was a half of a diamond elongated and thin in the middle of the thorax and on both sides starting about a forth of the way down the diamond there were four dots on both sides

the problems with me not being able to identify it is that every pic I see is either they all look different or the pics are too small to see the details.

2007-12-28 06:49:49 · 3 answers · asked by Last Of A Dying Breed Fan 2 in Zoology

2007-12-28 06:48:48 · 2 answers · asked by Chica_2 1 in Chemistry