Non visible blood in the stool is termed occult blood true or false

When analyzing tree rings, what do scientists assume a thin ring indicates?

This question is only for applicants to scholars for medicine or scholars for dental medicine: what aspects about medicine (or dental medicine) intrigue you? describe how these aspects influence your life. (100-650 words)

Is a measure of the different types of organisms in a community. question options: tertiary secondary primary none of the above