Platyhelminthes have flame cells. what is their significance?

Based on anatomical similarities, to which modern animal is dr. digger’s creature most closely related?

You are working in the lab and are working with the same element but with varying isotopes of the element. you are working with c-11, c-13, c-14, and c-15. what is the average atomic mass of this element? (use periodic table) a- 12 b-15 c-14 d-13

Why did the federal government end its support of yucca mountain as a site for long-term storage of nuclear water