What forces are acting on a dropped book that falls to the ground? A Gravity Only

B Gravity and Air Resistance

C Air Resistance only

D Friction only

HURRY PLS

Predict the results of a two base insertion or deletion in a strand of dna that codes for a protien, how does this differ from a three base insertion or deletion?

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.

As scientist had investigated evolution from a variety fields they have found