What happens if plants grow into the cracks of roots?

What element does susan b. anthony include in this passage to strengthen her argument?

Photosynthesis uses co2 and cellular respiration produces co2. we call the point when the two processes are in balance--when there is no net production of co2--the compensation point. how might you limit one of the processes in order to achieve a compensation point?

In this picture, groups of pigment that capture light energy are located on the