On an electrophoresis gel, band B is closer to the positive end of the gel than is band A. Which of the following statements is true? A. The DNA fragments in band B were smaller than those in band A.
B. Band A and band B contain the same DNA fragments.
C. Band A moved faster than band B.
D. The DNA in B is more positively charged than the DNA in A.​

D. The DNA in B is more positively charged than the DNA in A.​

D. The DNA in B is more positively charged than the DNA in A.​

Explanation:

answer: a) a compound microscope has a greater magnification ability than a simple microscope.

explanation:

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.