Some women who took the drug thalidomide in early pregnancy gave birth to children with serve birth defcets. Which is thalidomide considered to be? A. antibiotic
B. mutagen
C. vaccine
D. virus

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.

d. groundwater flows through the subsoil and deposits minerals.

1. is geographic distribution

2 is increasing complexity

3 is transitional forms