To locate positions on Earth's surface, scientists use units called A pixels
B keys
C. contours
D. degrees

Degrees

Explanation:

Degrees of latitude identify far north or south. Degrees of Longitude locate far east or west.

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.

sex cells are usually half's then they find another half and make a fertilize egg