Proxima Centauri is the nearest star to Earth.
C. nucleic acids (consisting of genes which encode for specific proteins to be synthetized)
The only independent variable in this experiment is the amount of nitrogen Sarah uses. All of the other variables are dependent on other factor and processes, but Sarah controls the amount of nitrogen that she uses for each plant.
686.8 j is needed to burn 4.24 grans of pd.
