A scientist have learned more about Atoms models of atoms have changed one of the first atomic models was a solid ball such as a marble what are two illuminations of using a marble is the model in atom

Use of personal protective equipmentreview of lab test resultsadministration of medicationshand hygienemedical asepsisreview of lab test resultsadministration of activities include administration of medications and review of lab test results. hand​ hygiene, use of personal protective​ equipment, and medical asepsis are independent interventions.

Heterogeneity; preferential selection of particular sites