Science & Mathematics - 11 December 2006

a. The plants break down the bacteria as a source of nitrogen-rich nutrients.
b. The plants and bacteria work together to attract birds, which deposit nitrogen-rich droppings near the plant.
c. The bacteria convert nitrogen in the air into a form that can be taken up by the plants.
d. The bacteria kill and digest earthworms and other animals in the soil, providing excess nitrogen to the plants.

2006-12-11 12:55:46 · 5 answers · asked by mlight5001 1 in Botany

I need the answers to the following questions, but I'd also like to understand the concepts more. So, the more information you can provide the better. Thank you in advance!


(1.) True or False - Jerry Whitecloud just threw a baseball 92 miles per hour. The mean speed of all the other players on the team is 84 miles per hour, and the standard deviation is 4. Jerry’s z-score is 2.


(2.) The relationship between the empirical rule and a z-score would indicate that any z-score between –2 and 2 will occur about ___________ percent of the time.
a.1
b.5
c.32
d.95


(3.) Karl Schmidt just scored a 96 on his last biology unit test. The mean score of the 36 students in his class was 78, and the standard deviation was 12. What is Karl’s z-score?
a.0.5
b.1.0
c.1.5
d.4.8

2006-12-11 12:55:41 · 4 answers · asked by Colique 2 in Mathematics

How is the structure of a mitochondrion well adapted for the activities it carries out?

2006-12-11 12:53:50 · 3 answers · asked by Jen 1 in Biology

this is the chemical equation for the reaction
CuO(s) + h2so4 = cuso4 + h2o

could you please when explaining included colour changes

2006-12-11 12:53:50 · 1 answers · asked by shorty 1 in Chemistry

Hello. I have just uploded onto Photobucket 16 calculus practice problems, all of which will be of similar content to my eventual final exam. Now, an answer to these questions would be nice, but is not necessary. Instead, I am concerned with and interested in THE METHOD as to how one could arrive to the correct answer, as well as an EXPLANATION as to why each step needs to be performed in relation to the ones that follow. Anybody who can break down and explain the contents of these problems to me in a SIMPLISTIC way would just be amazing in my book. So thank you very much should you decide to help enlighten me, as I appreciate this more then the words in this post could even begin to convey!

Question #3: http://www.i138.photobucket.com/albums/q271/Link3324/math3.jpg


Full Album: http://www.s138.photobucket.com/albums/q271/Link3324/

2006-12-11 12:52:20 · 2 answers · asked by link332456 1 in Mathematics

Can anyone factor y=15x^3+5x^2-38x-4?
Anyone? Without use cubic equation...

2006-12-11 12:52:14 · 3 answers · asked by mandeep s 1 in Mathematics

Do they have any Right?
I all ready got the "No they dont have rights" part.
Now I need the YES they have rights part.

(School project)

2006-12-11 12:50:26 · 9 answers · asked by Anonymous in Zoology

What is the country with the socond largest land area in South America?

2006-12-11 12:49:01 · 8 answers · asked by haley nell 1 in Geography

2006-12-11 12:47:44 · 6 answers · asked by Anonymous in Earth Sciences & Geology

solve the equation for the given variable: 4m-n=6 ;n
i want to make sure if i did my answer right.

2006-12-11 12:46:24 · 8 answers · asked by fiori3092 3 in Mathematics

and we dont know the answers to these questions. if you know the answer to any of these can you let us know.

1.There are two groups of forces that are constantly changing earth's appearance; constructive and destructive.Explain and give examples of each.

2.What evidence is there to support sea-floor spreading?

3.How can the ocean floor keep getting wider but with the earth staying the same size?

4.What is the theory of continental drift?

5. What evidence is there to support Wegener's theory of drift?

6.What is the theory of plate tectonics?

7.How fast are the plates moving per year?

8.What causes the plates to move?

9.Compare and contrast tranform, divergent, and convergent boundaries.

10.What is the difference between active, dormant, and extint volcanoes?

11.Where do volcanoes occur?

12. How are volcanoes and earthquakes related?



if you guys could help us out that would be great, or even if you know a great website to help us!



THANKS!

2006-12-11 12:45:57 · 7 answers · asked by Britney 2 in Earth Sciences & Geology

2006-12-11 12:44:48 · 4 answers · asked by laya 1 in Physics

the question is:
what is the equation of a line that passes through the points (7,3) and (7, -3) ? its multiple choice and the answer choices are
A. x= 3 B. x= 7 C. y= -3

2006-12-11 12:44:25 · 7 answers · asked by Anonymous in Mathematics

I made a picture of the problem, just click the link and click on the picture to make it bigger. Please help, thanks!
http://i34.photobucket.com/albums/d141/darealbigtigga/trig.jpg
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2006-12-11 12:43:34 · 6 answers · asked by Shawn 1 in Mathematics

2006-12-11 12:42:23 · 14 answers · asked by Spicy 1 in Mathematics

Uuh, homework problem. I know there's a formula, but I don't know it yet. I have just a plain circle (and i could measure anything I want, radius, circumference). Help?

2006-12-11 12:41:03 · 5 answers · asked by roflyounotfunny 3 in Mathematics

2006-12-11 12:40:46 · 7 answers · asked by Anonymous in Zoology

2006-12-11 12:40:16 · 4 answers · asked by 5th grader needs help 1 in Mathematics

To speed up a reaction in a vessel pressurized at 98.0 kPa, a chemist added 202.65 kPa of hydrogen gas. What was the resulting pressure?

2006-12-11 12:40:03 · 1 answers · asked by untilyoucamealong04 3 in Chemistry

there are two questions that i really don't understand if anyone can help, i'd really appreciate it.

1. if one of two complementary angles measures 80*degree, what if the measure of the other?

i know that complementary is 90*degrees but so the other angle would be 10*degree?

and last question is

2. if two supplementary angles are in the ratio of 5:4, find the measure of the larger angle?

hmmm, no cule on this one


thanks guys for all the help

2006-12-11 12:39:42 · 5 answers · asked by Anonymous in Mathematics

how many earth years is = 2 29 saturn years? how many days or hours r 10 saturn hours? how many earth days r = 2 1 saturn day? thanks. pleez try 2 give me good answers. this is a major grade. i've looked on the internet for about 90 min. seriously. is there like a way 2 find out? like there's pi (3.14) is there something 2 find out dat? that's all i need 2 know.



BTW: did u know saturns rings are made of ice particles and snowballs. that's interesting!

2006-12-11 12:39:27 · 3 answers · asked by ♫♥chocol8roxღ♫ 3 in Astronomy & Space

2006-12-11 12:39:00 · 1 answers · asked by zazarulz2 2 in Mathematics

how can you use the triangle midsegment conjecture to find a distance between two points that you can't measure directly?

2006-12-11 12:38:29 · 2 answers · asked by limemountain 3 in Mathematics

are having?

2006-12-11 12:37:25 · 4 answers · asked by TJ815 4 in Weather

2006-12-11 12:37:05 · 9 answers · asked by sparky111 1 in Physics

2006-12-11 12:35:55 · 21 answers · asked by ladybug 2 in Mathematics

How long does a douglas fir x-mas tree last in an average home? And how does one prolong its life and take care of it?

2006-12-11 12:35:40 · 4 answers · asked by Gunners#1 2 in Botany

2006-12-11 12:33:53 · 4 answers · asked by edwardrodgz 1 in Mathematics

i really want 2 know a good synonym for solar system,revolution,axis,rotation,space probe,coment,astroid,satellite help plz!!!!!!!!!!!!!!!!!!!~*~♥ thanks

2006-12-11 12:32:47 · 6 answers · asked by -Rissa- 1 in Astronomy & Space

2006-12-11 12:32:34 · 15 answers · asked by Jasmine W 1 in Mathematics