In the process of urine formation:. a. first filtrate is formed, then tubular fluid, then urine.
b. tubular fluid is formed, then filtrate, then urine.

Name one similarity and one difference between the morphology of a brachiopod and a bivalve

Tara sees a commercial for a brand of pills that promise to boost energy and people perform better in work and school. as people in the commercial talk about how much better they feel when taking the pill, tara notices a message on the bottom of the screen that reads, "this pill is not approved by doctors and has not been tested in controlled experiments." what is the best conclusion that tara should make about the commercial? it is making scientific claims based on subjective observations. it is making scientific claims based on opinions instead of pseudoscientific facts. it is making pseudoscientific claims based on objective observations. it is making pseudoscientific claims based on opinions instead of scientific facts.

Which two criteria must be met before scientist can use radiocarbon dating? explain your answer