Tommy is planning his science fair project. He wants to measure the rate of photosynthesis in plants that live in fresh water. I
s this an example of a scientific investigation or an experiment? An experiment because it shows a cause and effect relationship An experiment because it does not ask a testable question An investigation because it can be easily done in natural settings An investigation because there is a control group
Nitrogen is special because it is necessary for growth and reproduction. It's needed for plants and animals to survive. The main function for the atmosphere i believe is to give oxygen and nitrogen.
