What does stage 1 represent? a. a muscle that is fully contracted b. a muscle that is fully at rest c. a muscle that is rotating

The correct would be option b.

It can be explained with the help of the H zone.

H zone is the region of the muscle which consists of only the thick filament, that is, myosin.

In a relaxed state, the thickness of the H zone is more as compared to the contracted state.

In the contracted state, the myosin pulled the actin fibers towards the M line due to which thickness of H zone decreases.

the two answers are a, the population of birds with large beaks will increase on the island, and c, the trait for large beaks will be passed on to future generations through natural selection. the reason for that is because if the birds that have beaks developed for eating small seeds lose all of their food, they will go hungry and eventually starve because they physically cannot eat the large seeds, therefore making the population of large beaked birds higher. also, if the trait of large beaks are dominant on the island over small beaks, then over time the large beaked birds will reproduce more and more, while the smaller beaked birds will reproduce less and less because they can't survive with the food provided. that leads to the trait of small beaks disappearing and the trait of large beaks taking over the island.