生物的八大特征有哪些呢？Characteristics of living things

1.Living things are based on a universal genetic code. 

2.Living things grow and develop. 

3. living things respond to their environment. 

4. Living things reproduce. 

5. Living things maintain a stable internal environment. 

6. Living things get and use material and energy.  7. Living things are made up of cells. 

8. Taken as a group，living things evolve.

几个生词

epidemic流行病，

stimulus刺激，单数形式

stimuli 刺激，复数形式

homeostasis稳态，

metabolism新陈代谢