A student is using a microscope to view an unknown organism. The student observes that the organism is unicellular and eukaryotic. The organism is most likely a member of which Kingdom?

A. Plantae
B. Animalia
C. Bacteria
D. Protista

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.

Which of these conditions most likely produces an unstable isotope?

Astudent is trying to create a table that compares hypotheses, theories, and laws. hypothesis theory law do scientific researchers formulate it? yes yes yes does it explain why things happen? yes yes no yes yes yes is it used to make predictions? no yes yes which of the following questions would most likely fill the blank in the table? is it an intelligent guess? is it newly formulated? is it based on observations? has it been proved?