What problems the following devices help to solve for plants: thorns on the stem; bright flowers; delicious juicy fruits.

Plant problems and solutions:
* thorns on the stem – protection from eating
* bright flowers – attracting insects for pollination
* tasty and juicy fruits – spreading fruits and seeds

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.