Sheldon and Odessa's standard deduction is $?

Certification programs are offered by all of the following except

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.

What percentage of the earth's water is available for use by living things?