I was walking outside today, and I saw a bird singing right on top of a brush without showing fear of me - even though I was a few feet away from the brush. It sounded beautiful and was in a perfect position for a hawk to ambush it. I was wondering...why do they sing!!!

2006-10-12 03:24:35 · 17 answers · asked by Jerry H 5 in Zoology

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how is trioxonitrate acid produce in the laboratory?

2006-10-12 03:24:34 · 6 answers · asked by afonso4real 1 in Chemistry

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The diagonals of a square divide the angles into 2 equal parts.?

The measure of the angles in one of the triangles must be?
a. 30-30-30
b. 45-45-30
c. 45-45-45
d. 45-45-90

2006-10-12 03:21:06 · 12 answers · asked by cave_21man 1 in Mathematics

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Are there any exercises to improve iq?

2006-10-12 03:20:44 · 5 answers · asked by Red Falcon 1 in Other - Science

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How much would 1g of iron weigh at one of the magnetic poles?

Would the magnetic field "going in" at the poles make a difference to the weight of a fixed mass of iron? What about a 1g magnet?

2006-10-12 03:20:30 · 9 answers · asked by Alyosha 4 in Physics

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Prove sin(x+60degrees)=sin(120degrees-x)?

any suggestions appreciated :)

2006-10-12 03:20:24 · 9 answers · asked by brucay 1 in Mathematics

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Are Humans the only planetary organism that can classify themselves into a "race"?

I was just playing a game like I usually do and scratch my head and thought of this question. What other species can be classified into a race other than humans?

2006-10-12 03:19:59 · 9 answers · asked by Game lover 2 in Biology

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What permission du need to launch a satellite?

Can ne1 launch their own satellite or do they need permission from the countries it would orbit over or the country it would be launched from? Do government people check them out before they can be launched? Are satellites allocated their own space outside our atmosphere so they don't all crash into each other?

2006-10-12 03:11:35 · 9 answers · asked by Anonymous in Astronomy & Space

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What is the method of least squares?

And how do i use it to estimate the relationship between discharging voltage and time?

2006-10-12 03:10:58 · 4 answers · asked by Anonymous in Mathematics

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Line AB is located at (-5,0) and (-1,3). The slope is?

a. 4/3
b. 2/4
c. 3/4
d. 4/2

2006-10-12 03:10:57 · 5 answers · asked by Tony R 1 in Mathematics

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why pressure gauges fill with oil?

pressure gauges in cnc machines and hydraulic machines are fill with oil. what the reason to fill the oil in pressure gauges.

2006-10-12 03:09:51 · 3 answers · asked by naj b 1 in Engineering

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Can you alter your DNA by taking hormones such as John Mark Carrs failed DNA test could his dna being altered?

Preop sex change patients have to take estrogen and other hormones I believe just wondering if this does anything to dna that case still bothers me.

2006-10-12 03:09:06 · 3 answers · asked by atlee73 1 in Biology

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The radius of the cylinder is 14 inches. To find its circumference use?

a. 3.14
b. 2r
c. 2rtt
d. 1/2 d

2006-10-12 03:08:43 · 7 answers · asked by Tony R 1 in Mathematics

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Q={x is such that x is greater than or equal to element of real number},say if its finite infinite or null set

Help plzzzzzz.

2006-10-12 03:08:28 · 4 answers · asked by Jasoda T 1 in Mathematics

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What kind of fish do the works of dentists?

2006-10-12 03:05:58 · 7 answers · asked by Anonymous in Biology

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i need serious help please!?

Solve and and check the equation, buit only type your answer as variable=solution.

1. 5c + 6 - c = 2c + 9 -c
2. 6d +1 - 2d = 3d - 3
3. 4d + 3d + d = 3d - 15
4. 15B - 6 = 8B - 3B + 14
5. 7h + h - 6 = 10 + 4h

JUST IN CASE U DIDNT KNOW IM NOT IN SCHOOL TODAY, THERE IS A TEACHERS CONVENTION. THIS WOULD REALLY HELP ME GET CAUGHT UP IN SCHOOL. IF U KNOW HOW TO DO IT , THEN LEAVE UR EMAIL ADDRESS SO I CAN ASK U FOR MORE PLEASE. IF U DONT WANT TO LEAVE IT THEN FINE BE LIKE THAT.

2006-10-12 03:05:52 · 6 answers · asked by Ashley 2 in Mathematics

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