What is the difference between a haploid cell and a diploid cell?

the most most obvious difference between haploid and diploide is

the number of chromosome sets that are found in the nucleus.

Explanation:

haploid cell are those that have only a single set of chromosomes while diploid cells have two sets of chromosomes.

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the answer is a or when it says crossing over

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.