PCA Biplot interpretation help.

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I was visualizing a scatterplot between the PC1 and PC2 of a PCA I've done with tidymodels' step_pca. The results are separated into three cluster like these. What does it mean?

Also, these plot was drawn with geom_point, but I want to know if is there any way I can visualize arrows in the biplot with tidymodels like in FactoMiner?

Also, what's the difference between juice() and bake()? I've seen bake() used to generate altered data set in https://www.tmwr.org and also saw juice() used in PCA and UMAP with tidymodels and #TidyTuesday cocktail recipes | Julia Silge to generate altered data set.

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