Science & Mathematics - 15 December 2006

2006-12-15 11:12:25 · 3 answers · asked by Tina 1 in Botany

2.Nitrogen fixation converts gaseous nitrogen into ammonia and ammonium compounds. Which of the following is true?

a.The air in the atmosphere is about 20% nitrogen gas.

b.About half of all living things require nitrogen for survival.

c.Plants and animals can not process the nitrogen from the nitrogen gas in the air.

d.none of the above

3. In any food chain the total amount of energy always ____________.

increases

decreases

stays the same

decreases then increases

4. Ninety-six percent of all living things are made up of the following elements:

Carbon, Oxygen, Nitrogen and Hydrogen

Oxygen, Hydrogen, Water and Carbon

Nitrogen, Sodium, Oxygen and Hydrogen

Hydrogen, Oxygen, Potassium, and Water

5. Which of the following is NOT part of a DNA molecule?

nitrogen base

phosphate

potassium

sugar

6. A picture representation for predicting what offspring will look like is a(n) ______________.

genotype

Punnett Square

allele

gene

2006-12-15 11:09:28 · 6 answers · asked by J-Diddy 1 in Biology

i have data , it is one mesurment from each subject , i want to calculate the reliability of the measurments that i had collected

2006-12-15 11:07:57 · 1 answers · asked by Anonymous in Mathematics

2006-12-15 11:06:37 · 3 answers · asked by Anonymous in Weather

2006-12-15 11:03:55 · 7 answers · asked by Anonymous in Physics

any metero showers or comet scheduals this month

2006-12-15 11:01:32 · 6 answers · asked by Anonymous in Astronomy & Space

2006-12-15 11:01:19 · 5 answers · asked by Anonymous in Astronomy & Space

Pam has a mass of 35.2 kg and she is at rest on smooth, level, frictionless ice. Pam straps on a rocket pack. The rocket supplies a constant force for 19.4 m and Pam acquires a speed of 63.4 m/s. What is the magnitude of the force in N? And what is her final kinetic energy (in joules)?

2006-12-15 10:58:58 · 3 answers · asked by Anonymous in Physics

An archer puts a 0.2 kg arrow to the bowstring. An average force of 189.8 N is exerted to draw the string back 1.44 m. g=9.8 m/s/s and assume no friction loss. With what speed does the arrow leave the bow (in m/s) and how high does it go if it is shot straight up (m)? No time is given.

2006-12-15 10:56:03 · 1 answers · asked by Anonymous in Physics

2006-12-15 10:55:00 · 6 answers · asked by Anonymous in Geography

2006-12-15 10:52:17 · 9 answers · asked by Benjamin J 1 in Astronomy & Space

Find the exact area between f(x)=x^3-7x^2+10x, the x-axis, x=0 and x=5.

2006-12-15 10:51:15 · 6 answers · asked by Anonymous in Mathematics

Don't they both deal with input and output forces?

2006-12-15 10:43:02 · 4 answers · asked by ZZ 4 in Physics

2006-12-15 10:40:40 · 3 answers · asked by rathaur_1984 1 in Engineering

what is the differentiation of x/(x+1) ?
thanks.

2006-12-15 10:40:29 · 3 answers · asked by Koray S 1 in Mathematics

please help I just cant get the hang of these.

2006-12-15 10:39:40 · 16 answers · asked by momoftwins1986 1 in Mathematics

I want to open one up some day. Any ideas on how to get started on that and how much it would cost, education needed? Thanks for any info guys.

2006-12-15 10:38:46 · 2 answers · asked by *Lizard_Gurl♥ 1 in Zoology

what is radar plot and what is radar track? what are difference between them?

2006-12-15 10:38:33 · 2 answers · asked by HS C 1 in Engineering

2006-12-15 10:37:24 · 9 answers · asked by bonnie 1 in Zoology

Do you love your job? Is it fun, also any herpetologists out there what kind of education did you get? Any help will be appreciated.

2006-12-15 10:37:14 · 2 answers · asked by *Lizard_Gurl♥ 1 in Zoology

2006-12-15 10:35:42 · 26 answers · asked by DWC 1 in Physics

2006-12-15 10:34:08 · 5 answers · asked by Brandy boy 2 in Earth Sciences & Geology

Really haven't heard of them on Access Hollywood or that one other Hollywood show that plays before or after of the Access Access show. Have they been staying low profile from the papparazzi's or what?

2006-12-15 10:29:33 · 6 answers · asked by Bobcat9 2 in Biology

2006-12-15 10:26:48 · 4 answers · asked by NicoleAnn 1 in Mathematics

If you have a proportion...... how do you do the 7 method??

2006-12-15 10:26:35 · 6 answers · asked by Anonymous in Mathematics

Expand and simplify using Pascal's Triangle.
(2+3x)^5

2006-12-15 10:25:03 · 5 answers · asked by untilyoucamealong04 3 in Mathematics

I mean, how did the early experimentalists count the number of atoms when they were not even sure atoms existed?

2006-12-15 10:21:57 · 2 answers · asked by Gibaudrac D 2 in Chemistry

you work for a construction company. one of the clients wants the company to build a 16 foot by 20 foot dance floor.
A. you can draw a design on the graph paper.
B. 50% of the floor has to be congurnt triangles, and reassemble them to form an intersting pattern. the shapes need to be reassemble to form an 8 inch by 10 inch rectangle.

2006-12-15 10:21:47 · 1 answers · asked by princetongirl81824 2 in Engineering

If electricity travels at the speed of light, and computers use electricity, why does it take a few seconds to load a webpage thats in china or something?

2006-12-15 10:20:27 · 6 answers · asked by beavis n butthead 2 in Physics

i would like to know if food dye ,like the kind at a store, is a pigment.

2006-12-15 10:19:19 · 2 answers · asked by eri16k 1 in Chemistry