When an experiment shows that one variable makes another variable change and no other variables have any effect the experiment shows

Which of the following is not a characteristic of carnosaurs? a. long narrow skulls b. strong forelimbs c. horn projecting from their skulls d. none of the above

Adigestive system that is a series of tubes beginning at the mouth and ending at the anus is a digestive system.

What is true of all organisms in the kingdoms protista, plantae, fungi, and animalia? a. they are multi-celled. b. they are photosynthetic. c. they have cells that contain membrane-bound organelles. d. they contain cells that lack membrane-bound organelles.