What is the difference between different types of organisms from each other?

-morphologically (externally)

The reason for the differences in species:
-population waves and gene drift
-struggle for existence
-natural selection
-different devices

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.