Which worm sometimes uses specialized tentacles to exchange gas and capture food? a fluke
a planarian
an earthworm
a marine worm

This is the process of making a prediction based on the results of prior observations of similar events.

Speed is the ratio of the distance of an object moves to

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.