What were some of the accomplishments of chaldean astronomers ?

The pka of three different c―h bonds is given below. explain the observed trend in pka. select the single best answer.

Ashort story about human cruelty is adapted for dramatic radio broadcast. what choice might the broadcast's producer make to present the theme effectively? a. play suspenseful music when a character is acting cruelly o b. have an actor step out of character to deliver a moral to the audience o c. insult the audience throughout the broadcast o d. have the actors share memories of times when they were cruel

The animals in the food web release into the environment, which plants then use for a) oxygen: respiration b) carbon dioxide: respiration c) water vapor: photosynthesis d) carbon dioxide: photosynthesis