Что изменилось в жизни растений и животных леса с наступлением зимы? С чем связаны эти изменения?

I 'd had headache and a high fever for a couple of days.The third day I went to hospital to see the doctor.The doktor took my temherature and examined me. He diagnosed flu. The doctor told me I needed to take pills and get an injections every day. A week later I felt better.