What is not a feature of natural selection a) competition for resources
b) production of many offspring
c) selection by humans
d) variation within the population

C

Explanation:

Selection by human is defiantly not natural selection. Selection by human is called selective breeding which is when two different breeds are put together to produce an offspring with special characteristics.

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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.

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.