Does the cell theory apply to both eukaryotes and prokaryotes? Why or why not?

How are the tortoises that darwin observed on the galápagos islands similar to the anoles that losos studied

Which of the following best describes the purpose of the parathyroid hormone? a. it decreases the blood calcium level and decreases blood phosphorus level. b. it decreases the blood calcium level and increases the blood phosphorus level. c. it increases the blood calcium level and increases blood phosphorus level. d. it increases the blood calcium level and decreases blood phosphorus level.

The part of the eye that closes and opens to let light in is .