Which senior in the biology department of the university can tell me, is biology difficult to learn?

There are some difficulties. Junior and senior high school students are too shallow. College biology is completely different. There are many classes to learn and many things to learn, such as zoology, botany, biochemistry, biophysics, molecular biology, genetics and so on.

There are all kinds of knowledge about biology, and the university has to study chemistry, physics and other subjects. For example, freshmen majoring in biology in our school study chemistry more than those in the Institute of Chemical Engineering.

Also, biology is an experimental subject, with one experiment as the main subject and the most experimental classes, as well as physical experiments and chemical experiments. However, if you like biology, it's not that difficult. Look at yourself, I won't lie to you about "2 1 century is a biological world".