Match the disadvantages to the correct conservation methods? plz me

Why is it important to reduce the number of chromosomes in half when forming gametes for sexual reproduction?

Which sentence is an example of a strong conclusion to an autobiography? a. i stayed after school three days in a row to practice onstage in the auditorium. b. i knew i would have to practice all week to memorize my dance for the recital. c. after the recital was over, i knew practicing was worth it, and i was looking forward to my next big challenge. d. on opening night, i danced in front of a packed auditorium.

What is the most appropriate method of gaining weight (muscle mass)