Choose all the answers that apply. if gene flow is reduced 1. speciation can happen 2. the genetic difference between two populations increases 3. the genetic difference between two populations decreases 4. the population may become extinct 5. the species becomes endangered

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.

b is the correct answer