Science & Mathematics - 11 December 2007

a. cnidarians
b. sponges
c. jelly fish
d. flatworms
e. placazoans

2007-12-11 15:34:09 · 8 answers · asked by brian 2 in Biology

a. spores
b. cuticle
c. xylem
d. sporophytes
e. pollen

2007-12-11 15:31:01 · 3 answers · asked by brian 2 in Biology

These numbers are worth 20 percent of a persons grade
85, and 80
87 is worth 25 percent of the persons grade
and 88 is worth 25 percent of a persons grade.

What number grade does the person end up with?

2007-12-11 15:29:22 · 3 answers · asked by smiles 2 in Mathematics

2007-12-11 15:29:17 · 2 answers · asked by Desperate 1 in Biology

The moon has many craters because it has been hit many times by asteroids or some ther unknowned objects, why is it that the eart being more bigger does not have a history of craters? It should look similar to the moon, I would beleive.

2007-12-11 15:27:49 · 12 answers · asked by Salt Lake 1 in Astronomy & Space

y = 4 - 5x

how do you rearrange this so it is in slope-intercept form?

2007-12-11 15:27:17 · 3 answers · asked by Anonymous in Mathematics

2007-12-11 15:23:31 · 1 answers · asked by Anonymous in Chemistry

33.6 L of CH4 are combusted under a dish containing ice. change in Hrxn for the combustion of CH4 is -802kJ/mol. How many grams of ice can you melt if none of the heat is lost to the environment? (change Hfus=6.00 kJ/mol)

is this how u do it? can u do it for me?

Calculate how many moles are in 33.6 L.

Moles X 802kJ/mol = total heat.

Total heat / 6.00 kJ/mol = moles of ice

moles of ice X mol wt. of ice = grams of ice melted

2007-12-11 15:23:17 · 2 answers · asked by Anonymous in Chemistry

2007-12-11 15:22:07 · 4 answers · asked by Anonymous in Mathematics

Find the parametric equations for the line of intersection of planes:

z= x+y, 2x-5y-z=1

Is it possible to set any x,y,z point equal to 0?

For instance my book sets x=0 and they get the points (0, -1/6, -1/6) & get the resulting parametric equations x=6t, y=(-1/6)+t, z=(-1/6)+7t

but when I did it I set z=0 and got points (1/7, -1/7, 0). I would get different parametric equations. Is this wrong?

2007-12-11 15:20:43 · 5 answers · asked by manutd84 1 in Mathematics

2007-12-11 15:20:03 · 2 answers · asked by Anonymous in Chemistry

Is there any organization that actually gets people together to go live in redwoods in an effort to save them? In essence, to help people literally become tree huggers?
I'm really intrested but dont know where to begin to look for anything like that.

2007-12-11 15:18:43 · 5 answers · asked by chancie93 2 in Earth Sciences & Geology

2007-12-11 15:18:27 · 6 answers · asked by Anonymous in Chemistry

they say the universe formed 10 - 20 billion years ago...what was there before the universe was formed?

2007-12-11 15:16:19 · 14 answers · asked by Anonymous in Astronomy & Space

which is faster speed of time or speed of light

2007-12-11 15:14:04 · 18 answers · asked by Anonymous in Astronomy & Space

hi ppl... i gotta make a fully functional RC plane as ma project... i'd like to make it of ma own rather than buying kits and assembling... could anyone pl help me with da step by step(or gemme da website that explains) procedure for making ma project come true ??? pl help...

2007-12-11 15:12:00 · 2 answers · asked by Gokulsreeram 2 in Engineering

I am planning in buying a telescope, not to expensive can someone give me some advise how to shop for one, Is there one that a camera can be adapted or to take fotos of objects in the sky, moon etc.

2007-12-11 15:10:17 · 6 answers · asked by Salt Lake 1 in Astronomy & Space

What is the standard of care for PA's inserting central venous catheter? In my mom's case, the central line was inserted into an artery from the heart and it bled throughout the night (surgically placed at 4 pm, but not checked by a Dr until 10 am next morning). Can anyone tell me if the hospital would be negligent or at fault for not having a Dr. check the surgical procedure? If mom bled throughout the night and had to have 9 units of blood/ffp transfused the next day, would that be considered as bleeding to death? She passed away a week after the incident. She never regained strength or awoke after the incident. Where would I find the standard of care for central venous catheter insertion?

2007-12-11 15:10:07 · 6 answers · asked by Bonnie A 1 in Medicine

I'm familiar with the General Rule: U^n du , but I don't think it will work in this case.

please help!

2007-12-11 15:09:03 · 7 answers · asked by Conservative Jesus 1 in Mathematics

2007-12-11 15:07:06 · 2 answers · asked by Anonymous in Chemistry

2007-12-11 15:06:41 · 5 answers · asked by ? 6 in Weather

Has Anyone out there ever had a ghost or demon cast out of thier home and or body? If So, By Who? And did it work ? Has It ever came back? Are you sure it's gone? I Just haven't seen anything about this. Just what people have seen or heard. Thanks Just wanted to know????????

2007-12-11 15:05:09 · 11 answers · asked by watersign 1 in Paranormal Phenomena

i dont get how to solve this algebra 2 question?!?!?! the x2 in the problem is x squared in case that was confusing =)...
but yea i just really dont know how to set it up!

2007-12-11 15:03:57 · 9 answers · asked by angeltearz27 2 in Mathematics

2007-12-11 15:03:54 · 7 answers · asked by BILL 1 in Zoology

I'm writing an essay for my Anatomy and Physiology class and I don't know where to begin. I have to write about three reasons why the study of A&P can be seen as valuable to our culture today, especially in light of technology. I just need some ideas to get the ball rolling. Thanks!

2007-12-11 15:03:32 · 2 answers · asked by Mel 2 in Biology

2007-12-11 15:02:28 · 12 answers · asked by jay r 1 in Biology

give examples

2007-12-11 15:02:09 · 4 answers · asked by lucy 1 in Chemistry

2007-12-11 14:59:35 · 2 answers · asked by Anonymous in Physics

As we know Solar System consists of galaxies which orbit the Sun. But at the same time, the Sun loses it gravity and attraction power toward these revolving planets because it loses mass and energy constantly and this theory looks logic.

My question : Is there any antithesis which dismisses this theory and if yes why?

2007-12-11 14:58:23 · 2 answers · asked by massood v 1 in Astronomy & Space

water sources: lakes, tap water, rain water, ocean, pond, etc.

2007-12-11 14:56:02 · 5 answers · asked by Abby! 4 in Chemistry