Help with 2 questions please!! will mark as BRAINLIEST!!

1.) Over time, organisms change. Sometimes they change so much that descendants may be completely different from their ancestors. What must happen for this process to occur?


mutations in egg and/or sperm


organisms die before they have a chance to reproduce


traits acquired during an organism's lifetime are passed on to offspring


no chance for mutations in sex cells

2.) In order to support his theory of evolutionary change, Charles Darwin concentrated his studies on the many species of finches in the Galapagos Islands. Darwin noted that many of the birds had different shapes and styles of beak.

What is the possible explanation for what Darwin observed?


The birds had different beaks because the females preferred certain beak shapes over others.


People had bred the birds to have beaks with varied shapes and sizes.


The birds had beaks that were adapted for feeding differently.


Some birds had been injured by predators and were poor competitors.