According to the circular flow model, which of the following do producers provide to consumers

Assessment includes a. interviews, recorded conversations, videos, frequency counts, and time samples. b. formal standardized tests and developmental screening tools. c. various types of documented observations, documentation of child work, checklists, rating scales, and standardized tests. d. anecdotal notes, narratives or daily records, daily health checks, and teacher observation checklists.

Mount saint helen the great lakes and death valley are physical features of the earth which scientific term describes these features

How do you work out 21.3-8= show your working. plz