• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

The affect of fertiliser on algae.

Extracts from this document...


The affect of fertiliser on algae For this piece of biology coursework, I have been asked to investigate the effect of fertiliser on algae. Prediction In this experiment I am investigating the effect of fertiliser on algae and I think that the more fertiliser in the solution the more algae will have grown, the reason I say this is because the fertiliser will give nutrients to the algal and make it grow faster. Method Firstly I gathered all of my equipment, which I needed for the investigation, and then I decided what concentration of fertiliser I should use. I came up with the following concentrations of fertiliser: - 0%, 20%, 40%, 60 %, 80% and 100% The remaining percentage on some of the above percentages will be made up of water, So that all the solutions have the same amount of liquid in them to ensure a fair test. ...read more.


Work tidily * Be sensible with equipment Fair Test To ensure I fair test I am going to try and make my measurements of the fertiliser as accurate as possible, so I can get as accurate results as possible. When I leave the results for a week I am going to leave them in a safe place, so I do not run the risk of the solutions being tamped with, which would greatly affect my results so that is why it is vital. Equipment list * 6 test tubes * Bottle of fertiliser * Bottle of algae * Test tube rack Results Fertiliser (%) Algal count 0 40 20 60 40 140 60 160 80 180 100 150 Analysis I have produced a graph from the table of results I retained and I have showed that my prediction was correct. ...read more.


Another reason for this is that the tubes might have been put next to a window and the sun could of evaporated some of the solution, and this did not really affect my results but they could of greatly. I could of used a tool, which makes the measurements 100% correct, although I got them as accurate as possible this would have been better because they would enable my results to be more accurate. When I counted the squares full of algae on the counting cell sometimes the cell was not full of a the solution, and it was quite hard to judge the amount of the algae is the solution, so this could have also caused it not to be a fair test. Michael Buckingham ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Molecules & Cells section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Molecules & Cells essays

  1. Catalyse Investigation

    Observations and Measurements - In this investigation measurements of reacting quantities were measured using syringes. The size of syringe was selected to give the most accurate reading i.e. smaller syringes were used for smaller quantities. This meant that the scales on the apparatus allowed a more accurate determination of the exact quantity.

  2. Spreadsheet report

    Drinks 800 367 433 �71.93 INSTOCK Popcorn 400 190 210 �38.00 INSTOCK Posters 350 165 185 �66.00 INSTOCK sparklers 200 78 122 �20.28 INSTOCK Sweets 900 409 491 �130.88 INSTOCK T-shirts 250 75 175 �90.00 INSTOCK Albums 900 409 491 �752.56 INSTOCK Singles 200 87 113 �65.77 INSTOCK Jewellery 140 52 88 �41.60 INSTOCK Max �752.56 Week 4 Item No.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work