Question

easy help

Answer 1

Crops do not grow well without nutrients. Over-farming depletes nutrients from the soil. One of
those nutrients is nitrate. Nitrate is a form of nitrogen that plants use to make proteins and
nucleic acids.
Legumes are plants that have root structures containing bacteria. Those bacteria make and
release nitrates into the soil. Some farmers have noticed that planting and growing legumes helps
their crops grow.
Design an experiment that would address the problem of nitrate depletion. Make sure to include
the components of a Well Designed Investigation in your response.

Answer 2

Please dont spam and what is your question im not quite gettin it

Answer 3

Design an experiment that would address the problem of nitrate depletion.

Answer 4

Make sure to include
the components of a Well Designed Investigation in your response.

Answer 5

im not really sure

Answer 6

its a bit difficult do u hav any idea where to start?

Answer 7

no

Answer 8

Well. We can start by identifying what variables we are working with here.
What would be your explanatory variable(s) and what would be your response variable(s)?

Answer 9

i dont know

Answer 10

Well you could address the problem like this:
We want to invastigate how the average nitrate level in soil decreases as a function of the amount of plants / the area covered with plants.
That way we test for hypothesis that "Over-farming depletes nutrients from the soil."

Then in order to investigate if legumes helps creating more between nitrate you can do an experiment like the one before, but also planting legumes with a specific amount of area and keep the value constant.
Or you can try keep the value constant of crops, and increase the area of legumes planted.

Answer 11

You could also do another version:
The concentration of nitrate vs the time.
Then you do one graph for crops alone, and one with crops and legumes.

Answer 12

The experimental setup depends on what type of graph you like. the concentration vs time might be the most easy.

Answer 13

ones you choose let me know @katragaddasaichandra

Answer 14

The 1st

Answer 15

is good

Answer 16

@Frostbite

Answer 17

the first being?

Answer 18

ya

Answer 19

No i mean can you please say what version of the experiment you want, using words. :)

Answer 20

just the procedure

Answer 21

I should write a BCR

Answer 22

http://www.montgomeryschoolsmd.org/uploadedfiles/curriculum/science/high/biology/biosemesterand.pdf

Answer 23

the 1st bcr

Answer 24

scroll down to seee

Answer 25

The importance of nitrogen

Answer 26

I understand that, but what I ask is what kind of way you want to study it? you can do a ton of investigations depending on HOW you wanna study the things I gave multiple options:

nitrate vs time.
nitrate vs crop area.
nitrate vs crop number.

There are advantages and disadvantages for all of them, but common for them are they all able to investigate how nutrients depletes nitrate from the soil and how the nitrate level my be assisted by legumes.
Think a little about it. :)

Answer 27

Try think what the advantages and disadvantages could be.

Answer 28

nitrate vs crop area.

Answer 29

Alright.
So in order to make this experiment work you gotta choose how big your experimental area should be. Cause the area should aprox so big that it can contain highest number of crops area and at the same time not be to big. Here you has to do some quick and dirty testing using a fertilizer with known concentration I would say.

The conditions are suppose to be almost the same for the whole experiment, that means that the soil type should be the same, temperature be the same, amount of sunlight be the same and all other thinkable variables we can think of that could influence the experiment, so we keep it a controlled experiment.

Lastly but not finally, you gotta choose how to do the legumes part. you can do this be either by 1) increasing the area of legumes, and keep crops constant or 2) increase area of crops and keep legumes constant.

Again for this experiment you would need to do quick and dirty testing unless somebody else has already done an experiment like this.

That is basically it.
The data could be plotted in a scatterplot to look something like this perhaps (i don't know):

You can try add the other graph with the legumes if you keep that experiment constant regarding to legumes so it might look something like this (again I don't know):

Make sure you measure after a specific time \(t\) for all the experiments as we could imagine that the longer time the plants are in the soil under optimum conditions, the more nitrate they would use in total before measurement is done.