you can make a small test to memorize them.
There is no easy way to do your work. You just have to study and practice until you are good at it.
Study them.
Study hard.
It all depends on you and what would be easy for you to study. Not everyone study the same way as everyone each person has there own way for studying.
study hard
seriously , reapeat everything over an over.
The best way to memorize longer works such as Dale Carnagie's principles is to make a Study Deck - see the link - and carry it with you to study until you have them memorized!
Depends on way you think. But generally it is considered one of the tougher degrees to study. Personally I find it difficult but very interesting.
AN easy way
No easy way. You get a job and work. There are work/study programs offered at many colleges you could try that or you could try to find something in the area that you are getting a degree in. Some fields of study offer internships that is something you could check out, but there is no easy way. I worked my way through college and often held 2-3 jobs and carried 15 units a semester. None of it was easy.
The basis of grouping animals is to classify them. This provides an easy and organized way to study and learn about a species.
Yes it is. Because it is easy study different elements when organised in a systematic way.