According to evolutionary theory, the cell on the right appeared first. were among the first photosynthetic forms of this organism.

cyanobacteria

Explanation:

Cyanobacteria are considered one of the first photosynthetic life forms on the planet. They are estimated to have appeared approximately three billion years ago. Given the date of fossils that prove the existence of this organism in primitive times, it is believed that cyanobacteria were the main responsible for releasing oxygen in our atmosphere, making the earth a habitable planet.

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.