Which of the following activities can be directly linked to desertification? (1 point)
I. irrigation of cropland
II. harvest of biomass for energy
III. building of housing developments

II only
III only
I and II
I and III
II and III

I and II

Explanation:

I. irrigation of cropland   &   II. harvest of biomass for energy

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.