Science & Mathematics - 8 January 2007

what is the answer

Seeds have an advantage over spores because they contain ____.

A. sori
B. a food supply
C. phloem
D. roots

thanks!

2007-01-08 09:25:33 · 4 answers · asked by Anonymous in Botany

2007-01-08 09:23:26 · 3 answers · asked by krystal r 1 in Mathematics

A world of solid ground with people and trees, oceans with clouds above it and, higher still, the enormous emptiness of space?
Are you one of the billions of people in that world?
If you answer "yes" to those questions, then you are mistaken!
If you were able to answer "yes" to them, then that means that throughout the course of your life you have probably ignored a most important truth.

2007-01-08 09:22:40 · 7 answers · asked by smiling4ever 1 in Other - Science

2007-01-08 09:22:13 · 1 answers · asked by STORMY K 3 in Earth Sciences & Geology

I see many of you are referencing Wikipedia as your sources... but anyone can add and edit information on Wikipedia. How many of you trust it faithfully? I admit, I use it to look things up often, but I don't trust it wholeheartedly as with most information I find on the internet (unless I know its from a legitimate site). Just wondering what all of you think about it...

2007-01-08 09:19:39 · 23 answers · asked by Ms. K. 3 in Other - Science

I need an easy , short answer for my science homework please.

2007-01-08 09:19:28 · 9 answers · asked by Cally B 1 in Astronomy & Space

2007-01-08 09:18:31 · 15 answers · asked by Anonymous in Mathematics

the following questions are what i need answers to... please explain in detail. tx! and make it easy to read... don't make it to "scientific"

1) Why are atoms electrically neutral?
2) is the following fill in the blank a New Element, Ion, or Isotope?
If an atom has a different number of electrons, it is a(n)_________
If an atom has a different number of neutrons, it is a(n)_________
If an atom has a different number of protons, it is a(n)_________
3)What is the noble gas configuration and wat does it imply?
4)How are metals and non metals separated on the periodic table?
5) is the following Fission of Fusion?
a-Heavy nuclei split, release lots of energy, form smaller nuclei.
b-Light nuclei combine, release lots of energy, from larger nucleus.
c-Used in nuclear power plants.
d-Power the sun and starts.

i will post more while yall ancer these. TX!!!

2007-01-08 09:17:13 · 3 answers · asked by Benjamin H 1 in Other - Science

from cells

2007-01-08 09:16:39 · 13 answers · asked by Anonymous in Biology

(-2+3i) ; (3+5i)

The problem above needs to be solved in addition, subtraction and multiplication, and division and needs to be in standard form.

Heres my answer: addition= 1+8i
Multiplication= -6+14i
subtract= -5-2i
division= could someone help me out for this one

2007-01-08 09:15:27 · 5 answers · asked by Ballerina 5 in Mathematics

difference

2007-01-08 09:13:39 · 4 answers · asked by Annie andersaon 1 in Mathematics

2007-01-08 09:13:06 · 2 answers · asked by mnkays 1 in Zoology

After several years, my kids and I have come to the conclusion that we have a poltergeist living with us. We've had numerous unexplainable incidents, as have guests to our home, that are usually just fascinating or mildly annoying. I'm only bothered when things are 'taken' that I really need. A couple of weeks ago, one of the earrings of my favorite pair disappeared from my bathroom vanity. After searching for days, I finally went out and bought a similar pair. The next day, the earring is right back beside the other one. That's a typical scenario. Well, yesterday my nine-year-old daughter's glasses went missing. She hasn't had them long, and is still at that very careful stage with them. We all saw her with them on yesterday, and she said she took them off to brush her hair. We saw her without them a few minutes later. Well, they disapeared, and she didn't realize it until a few hours later. She'd only been in two rooms. We've scoured the house for hours. Nothing. HEELLLP!!!

2007-01-08 09:11:34 · 18 answers · asked by joe friday's grrl 2 in Paranormal Phenomena

2007-01-08 09:11:20 · 5 answers · asked by Inquizzzative 1 in Medicine

an d after about 20-30 seconds it tipped over and the smell was horrific!!! I dont know if i should use the microwave agin..i dont want radiation and whatever.......the smell is gone.what should i do?!?!?!?!?!?!?!?!?!?!?!?!?!??!?!?!?!?!?!

2007-01-08 09:09:58 · 6 answers · asked by Anonymous in Engineering

Okay, this is a system problem so it needs to equations to solve a.) and b.)

okay, i don't get this problem AT ALL!!

Suppose you are flying an ultralight aircraft to a nearby town 18 miles away. With a tail wind, the trip takes 1/3 hour. Your return flight with a head wind takes 3/5 hour.

a.) Find the average airspeed of the ultralight aircraft.
b.) Find the average windspeed.

And i checked in the back of the book and the answers are: a.) 42 mi/h and b.) 12 mi/h. The problem is that i have NO CLUE how you get those answers!!

Does anyone know how to set up the equations?

2007-01-08 09:09:29 · 2 answers · asked by Anonymous in Mathematics

differences

2007-01-08 09:09:20 · 1 answers · asked by Annie andersaon 1 in Mathematics

Where is Isopropyl alcohol on the pH scale??(base)
Which one is close to a base on the pH scale?
Water, saline solution, pepto-bismol & alka-seltzer && whatever one is closer which what is the pH number?

Also on the pH scale where is Hydrogen peroxide (acid)??



I just need the number so I know where to put it thank you guys.

2007-01-08 09:09:17 · 2 answers · asked by queenpravato 1 in Chemistry

2007-01-08 09:07:48 · 12 answers · asked by Anonymous in Earth Sciences & Geology

Say the earth is the size of a grape and the sun is a grapefruit, could there be a planet earth the size of a grapefruit and the sun it orbits a big melon :) now im not talking fruit although it seems it im just talking about the scale of things.... also not on about gas giants just about planets like earth ;)

2007-01-08 09:06:46 · 5 answers · asked by Mobile Phones 2 in Astronomy & Space

ok help on balancing chemical equation!! H2S+O2=H2O+SO2! i dont get how to do this one and need it for tom.!!! i really need help bc my homework is already late a day and i just dont get it

2007-01-08 09:06:09 · 3 answers · asked by sweetie 1 in Chemistry

2007-01-08 09:05:53 · 6 answers · asked by guzzlegob 4 in Physics

2007-01-08 09:05:24 · 1 answers · asked by Anonymous in Chemistry

I hvae extreme nearsightedness on one eye, and my other eye is "farsighted"(about 15/20 vision but cannot see close objects as good as my other eye) Can looking at trees over a long period of time improve your eyesight? And do you look at the trees with or without the glasses?(or contacts)

2007-01-08 09:00:52 · 4 answers · asked by dan 2 in Medicine

√4(√6+√8)

2007-01-08 09:00:51 · 5 answers · asked by Nafertiti 2 in Mathematics

2007-01-08 08:59:23 · 50 answers · asked by Anonymous in Engineering

I dont know?

2007-01-08 08:58:04 · 8 answers · asked by R.A.E.C.H.E.L. 1 in Zoology

What happens to sodium chloride, potassium nitrate and calcium hydroxide after being cooled? (Well, first they were heated and then cooled)

2007-01-08 08:57:48 · 1 answers · asked by untilyoucamealong04 3 in Chemistry

could modern humans reproduce with early humans such as: neanderthals, homo erectus, etc. and have offspring?

2007-01-08 08:55:56 · 12 answers · asked by thereisnobathroom! 3 in Biology

2007-01-08 08:55:07 · 2 answers · asked by hhdtr 1 in Mathematics