The graph below shows the number of birds with a given beak depth in a certain location. Data was collected before (the white columns) and after (the black columns) a drought. For example, before the drought, about 30 birds with a beak depth of 8.3 mm were counted. Which three statements below are best supported by the data in the graph? ​

1. loamy sand is about 80% sand with 10% clay and defined mostly by sand particles with some clay to provide structure and fertility. the sand particles are easily visible and the soil holds structure but breaks apart easily.

2. scott sand can improve his soil quality by incorporating more silt and organic matter into the soil. peat moss and organic matter can also be incorporated.

"do a testcross with a homozygous recessive plant."