Competition for resources is a limiting factor because

Competition happens when a population becomes too large and must compete for food, water, shelter, and other resources. Basically, these limiting factors only happen when a population becomes too big and its environment can no longer support it.

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.

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.