Holly learned from her science teacher that her height resulted from about 180 genes, each contributing a tiny amount of genetic information. holly learned that her height was due to

ADDITIVE GENES

Explanation:

Additive genetic effects results from the singular combination of two or more genes to give the final phenotype, or when alleles of an individual gene combine so that their end-product effects is the total of each allele effects.

Another example of a function of additive genes is the eye colour.

✿   this landform has a high elevation and a high relief

✿   this landform is a mountain

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.