Science & Mathematics - 12 November 2007

I've done the first three labs and what did I get on them...

70, 75 and 79...I had straight A+s on all my labs last year in Honors Biology I and no one, not even myself can believe how bad I'm doing in AP Bio...I got a B the first quarter (Straight As and A+s and a B don't match on a report card:-( )

The one that I got a 79 on I had help from one of my college professor friends so I wanted to cry when I saw that grade...no one gets a B+ at least.

So can anyone help me with the rest of the AP Biology II labs...like someone who knows the definite answers and possibly got an A on them! THANKS SOOO MUCH

2007-11-12 11:32:18 · 5 answers · asked by Allana S 1 in Biology

are there similar properties between artificial light (lightbulb) and sunlight?

2007-11-12 11:31:32 · 2 answers · asked by Anonymous in Biology

I came up with this thought while taking a shower today. Yes that's right.

A creature (let's say a rabbit) is sitting on a lawn chair relaxing for 24 hours. He watches the sky the entire day and sees the sun rise, go around and set again.

In the winter time, there is less day light and time than in the summer.
The rabbit (and I) wonders: (IMPORTANT Note for my question - the rabbit has no clock to guide him, so it's just from his observation) - does the sun appear to rotate around the sky faster than it would in the summer, or does it simply stay in the sky visibly for less time total?

I hope that made sense, sorry to not be clear - I was just curious. I'm talking about what the rabbit experiences through his outlook.

2007-11-12 11:28:32 · 4 answers · asked by elecbass100 3 in Astronomy & Space

Ok let me know how this sounds to you, Christian or atheist. It seems that so many people are believing that we came from monkeys. Period. You believe in evolution. Thats fine and all, but that means every organism on the face of this earth is the descendant of one single solitary single cell organism. Every plant, animal, and fungus, etc came from the same cell according to your own logic. And furthermore where did the earth come from? Where did the dirt and the water and our lush atmosphere come from? You say "big bang" I say, well why Earth? Why did all this water and lush forest and all form on Earth but a harsh hostile environment on Venus? Does it not seem like way too many coincidences to be here by chance? Let me know what you think.

2007-11-12 11:27:56 · 29 answers · asked by Anonymous in Biology

2007-11-12 11:27:27 · 6 answers · asked by Anonymous in Zoology

2007-11-12 11:26:04 · 6 answers · asked by Anonymous in Engineering

not how they form, where they came from thank u!

2007-11-12 11:24:44 · 3 answers · asked by Keep your head high. :) 5 in Geography

2007-11-12 11:23:23 · 11 answers · asked by Keyrose. 1 in Chemistry

artificially make rain...like "Artificial precipitation induction"

2007-11-12 11:22:34 · 4 answers · asked by love*pink 3 in Chemistry

I am given: alpha = 45, a=3, c=4

I have to find beta, gamma, b

please help and explain this step by step, I want to get the idea of how to do these. thanks

2007-11-12 11:17:38 · 2 answers · asked by Anonymous in Mathematics

2007-11-12 11:16:32 · 2 answers · asked by lindsayhoops 1 in Chemistry

the question is a _______ is made up of organisms that are able to mate and reproduce offspring of the same type. and the possobilites of the answers are :
1.phylum
2.family
3.genus
3.speices
4.protist
5.fungus
i am thinking that it may be genus, ut i want to just be sure! thanks for your answers and i really apprecitate it.. and if you are going to help please don't say like "god you shouldn't be asking mee" becuase those answers are just annoying and you arn't helping me. thanks.

2007-11-12 11:15:06 · 3 answers · asked by Anonymous in Botany

There are 7 girls.
Each girl has 7 backpacks.
Inside each backpack is 7 Large Kittens.
For each Large Kitten, there are 7 Small Kittens.

How many legs are there?

2007-11-12 11:14:49 · 23 answers · asked by [bksnapple] 1 in Mathematics

2007-11-12 11:14:11 · 3 answers · asked by dazed and confused 2 in Botany

Relativity states that, as matter approaches the speed of light, mass approaches infinity and time approaches zero. Time is defined as a period over which events take place. Events require motion, and motion requires matter and space. Without motion there can be no time. What separates motion from time? Matter and energy are two forms of the same thing. Motion and time are not. Time is needed to calculate speed and distance. Man solved this problem by inventing time, his clocks measure the length of a day in hours, minutes, and seconds. A clock is nothing but a machine. It is motion that regulates the length of our day and year, motion of the Earth around its axis and its path around the sun, this has nothing to do with time, it is all about motion. A clock contains matter, therefore it has mass. If you subject a clock to relitivistic speed, its mass will increase; under this condition the movement of its components will slow due to the increased energy required to overcome inertia,

2007-11-12 11:14:04 · 1 answers · asked by johnandeileen2000 7 in Physics

ok ok...so this is the deal, the teacher gave us an experiment to do:
1)You have to peel and cut a potato in half,
2) dig a hole/cavity through it,
3)put it in a dish with water around it...and make a STRONG sugar solution and put it in the hole and
4)wait for 30 mins and see what happened.....


Well 1/3 of my class said the sugar solution in their cavity rose and had more solution in it..

The other 1/3 said that the sugar dissolved then the sugar solution in the potato decreased...

And the other 1/3..............NOTHING.... the potato turned purple!

What was suppose to happen and how is osmosis present there?

2007-11-12 11:13:11 · 2 answers · asked by Anonymous in Biology

I have orange wavy hair and brown eyes. She has brown curly hair and brown eyes.

So I figure that our baby would have brown eyes. I know that dark dominates over red. but my father had BLONDE hair and my mother had dark brown. And i came out with orange.

So what is it most likley, that a baby would come out, between an orange haired person and a darker brown haired person?

2007-11-12 11:13:09 · 4 answers · asked by Anonymous in Biology

1) Fe + CuSO4 ---> FeSO4 + Cu
2) 2 AgNO3 + Cu ---> 2 Ag + Cu(NO3)2
3) BaCl2 + NaSO4 ---> BaSO4 + NaCl2

Please explain how you got each. Thanks for the help!

2007-11-12 11:12:52 · 1 answers · asked by Anonymous in Chemistry

is xenon a radioactive element.

i need help. need this for chemistry project

2007-11-12 11:12:50 · 0 answers · asked by Anonymous in Chemistry

I need to know how to do the proof for that.... Corresponding altitudes of any two similar triangles have the same ratio as the corresponding sides

2007-11-12 11:12:44 · 7 answers · asked by Tigger 2 in Mathematics

2007-11-12 11:12:00 · 7 answers · asked by John 7 in Other - Alternative

ex...[lysosomes, rough er, smooth er, mitochondria, etc] answer back ASAP please...project due in 3 days!

2007-11-12 11:07:12 · 1 answers · asked by LISA S 1 in Biology

Use the rules of probability to determine the expected ratio of offspring showing two recessive traits in the trihybrid cross (PpYyRr x Ppyyrr).

2007-11-12 11:04:23 · 1 answers · asked by rugay 1 in Biology

Just need to make sure since it's been one of those weeks for me where I've been wrong about everything I thought and I can't afford to mess this up. Thanks.

2007-11-12 11:00:56 · 4 answers · asked by somebody 4 in Earth Sciences & Geology

I don't want an answer, i want to see how you did it. I have learnt find a lcd, the equation is
3x/4 - 2 = x/6 i really want to learn it so please help thank you.

2007-11-12 10:52:10 · 6 answers · asked by Anonymous in Mathematics

Last night, I was outside looking up at the stars, when I saw a falling star.
But it wasn't falling to the side or down...it was shooting UP.

Do stars fall up?

2007-11-12 10:51:03 · 10 answers · asked by lkjgfyfukh 4 in Astronomy & Space

The element silver (Ag) has two naturally occuring isotopes:
Ag-107 with a mass of 106.905 amu and
Ag-109

Silver consists of 51.82% Ag-107 and has an average atomic mass of 107.868 amu.

Calculate the mass of Ag-109

plzzzz

2007-11-12 10:50:24 · 3 answers · asked by Sina 2 in Chemistry

I need to find a cheap, reliable electric pump to buy that can pull water from a fishtank and put it back in. It doesn't need too pump very much water (will be operating out of a 1-2 gallon tank). Cheap is the biggest requirement, because I need to buy 4-5 of them. Also, I need it to run on DC, and needs to be able to take varied voltage input. This is because I have a program controlling the speed the pump goes by increasing or decreasing the DC voltage output based on other variables. I am using it for a science project. Thanks to people who answer!

2007-11-12 10:48:08 · 3 answers · asked by roneil4 1 in Engineering

The element exists in nature as 2 isotopes.

^153Eu the mass is 152.9209
^151Eu the mass is 150.9196

The average atomic mass of europium is 151.96 amu.

Calculate the relative abundance of the europium isotopes.
pleaseee

give me the equation so i could understand

2007-11-12 10:42:40 · 1 answers · asked by Sina 2 in Chemistry

answer any of the fallin questions!

1.Explain how oxygen and carbon dioxide are exchanged in the lungs.

2. What is the difference between sexual and asexual reproduction? Describe how an egg is fertilized

3.How do vaccinations prevent certain diseases?

thanks a bunch!!!

2007-11-12 10:40:34 · 5 answers · asked by Anonymous in Biology