You feel fine as you sit down in your usual seat in German class. However, when Dr. Kraus announces that there will be a pop quiz over 100 of the most difficult vocabulary words covered in the last few class sessions, your heart starts pounding and you get a queasy feeling in your stomach. This reaction is most likely a(n) A. CR. B. UCR. C. CS. D. UCS.

The correct answer is letter A) CR.

Explanation: Nausea may not be caused by underlying diseases. Some common causes include movements such as those in a car or plane, taking pills on an empty stomach, eating too much or too little or drinking too much alcohol.

early settlements on the subcontinent. both the indus and the ganges rivers carried rich silt from the mountains to the plains. when the rivers flooded, the silt spread over the plains and made the soil in the river valleys fertile for farming.