In a tide pool, 15 species of invertebrates were reduced to eight after one species was removed. the species removed was likely a(n) a) community facilitator. b) keystone species. c) herbivore. d) resource partitioner. e) mutualistic organism.

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.