¿Es posible que México llegue a ratificar un tratado cuya aplicación sea contraria a la Constitución?

What is the answer for the question

17 a tourist was planning a trip by car for travelling at some constant speed for 2.5 hours. however, he found that if he increases the speed by 20 km/h he can cover the same distance in 30 minutes less time than it was planned. what was the planned speed of the tourist, in km/h?

What is it called when someone gets sick from eating food contaminated with germs or toxins? a. potentially hazardous food b. ptomaine poisoning c. foodborne illness d. raw food