Which parts of the ear vibrate when hearing sound?
i auditory nerves
ii ear drums
iii ear bones
i and ii
i and iii
ii and iii
i, ll and iii

Which statement describes john tuzo wilson’s contribution to the theory of plate tectonics?

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.

Which best describes a gene? a. a sister chromatid b. a chromosome c. a tetrad d. a piece of a chromosome