Seed are sometimes sold commercially while still enclosed within the hard wall of the fruit, which must be split open to reach the seed. Different groups of plants have other modifications, the so-called stone fruits (such as the peach) have a hardened fruit layer (the endocarp) fused to and surrounding the actual seed. Nuts are the one-seeded, hard-shelled fruit of some plants with an indehiscent seed, such as an acorn or hazelnut. Seeds are produced in several related groups of plants, and their manner of production distinguishes the angiosperms ("enclosed seeds") from the gymnosperms ("naked seeds"). Angiosperm seeds are produced in
Community of practice viewed by many in the business setting as a means to capturing the tacit knowledge, or the know-how that is not so easily articulated. An important aspect and function of communities of practice is increasing organization performance. identify four areas of organizational performance that can be affected by communities of practice: The communities Lave and Wenger studied were naturally forming as practitioners of craft and skill-based activities met to share experiences and insights . Lave and Wenger observed situated learning within a community of practice among Yucatán midwives, Liberian tailors, navy quartermasters and meat cutters as well as insurance claims