500 different ways
To study different subjects at different time.
study 'the book' and write their thoughts
U can work and study at the same time. EX: In a little paper, u write it down what u really study for then while you work u can still look at the paper and study :D that's what i use to do and it work really good ;)
There is not many remains of the Precambrian time
Many people do.
6:50
Tell them to not give up and study harder next time.
different
The answer will depend on ten WHAT? Ten months, ten years, in year ten and if the last, in which country and what education system. Next, hours of study to what end? To pass an exam or to do very well? Different people need to study for different lengths of time to achieve the same results. All in all, the question is unanswerable.
A case study examines one case, probably a person, in detail and follows it through some period of time. A survey involves many different individual things or people, not studied in as much detail or during as much time.
.75 3/4 75%
Quick answer: A research study that focuses on phenomena from roughly the same time period (e.g. a latitudinal study of Arabic morphology, for instance, would examine different Arabic dialects all contemporary to one another). This approach is different from a longitudinal study, which would examine the way a phenomenon (or phenomena) develops over time (also called a "diachronic" study) (e.g. a longitudinal study of Arabic morphology would examine a dialect from one point in time and compare it with dialects from an earlier period).