WATER POLUTION

Worksheet 7

We wanted to know how much effect the pollutings solutions at the growth of the seeds.

Procedure:

We prepared three polluting solutions: 1 M, 0,1 M, 0,01 M of Ammonia, hydrochloric acid and sodium hydroxide. We also did one with only distilled water. We put ten seeds of soja in a petri capsula with paper and all solutions. Then we wait a week and we observe the results, we mesured the length of the seeds, we did average, and we count how much seeds of ten growed. Then we did this table.

Result:


















Conclusion:

If we pollute the water the seeds don't grow up. Then the herbiborous don't have eat, and then the carnivorous and the humans don't have eat too. If there not seeds, there is not oxigen too.
For this reason we must have mind with the pollutings.