Questions my teacher asked me that are on my SAT exam. Why do we wait until night to 'call it a day?'

How does turbulence work?

How do we store and retrieve memories?

Why do we dream?

Factor out the greatest common factor. minus − 14 14p3 plus + 10 10p2 plus + 4 4p

The different forms of a gene for a given trait are called .

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?