What is most likely indicated by the fact that the number of species resistant to a class of herbicide des not decrease over time? a. Individual weeds evolve herbicide resistance and pass the trait to their offspring.

b. The herbicide resistance trait is maintained in resistant populations.

c. The weed populations frequently lose then evolve a resistance to herbicides again.

d. Whenever one weed species loses herbicide resistance, one or more species gains resistance, leading to a net increase in resistant species.

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.