Can someone please help me with question 7 8 and 9 please

Me find the measure to side a and the process to solve the problem you appreciate it : )

Im gonna fail 7th grade selective breeding 1. creates offspring which are genetically identical to the parent 2. is the process of breeding only organisms with desirable traits 3. involves the removal of the nucleus of a cell 4. combines traits from organisms of different species

Twelve less than a number is at most 20