When the human body perceives internal and external stimuli, it responds to maintain a stable internal environment. What is an example of an internal stimulus within the human body?.

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 undergraduate degree can a student earn at a four-year college (not specific to a field of study)?

How do you work out 21.3-8= show your working. plz