Three types of threats to biodiversity are:
habitat loss and fragmentation the introduction of exotic, or non-native, species overexploitation, or overharvesting.
determine the type of threat that each of the following statements describes.
1. a wetland is drained to make room for a housing development.
2. south american rodents called nutria eat wetland plants and cause bank erosion in the united states.
3. some fishing nets damage the seafloor.
4. melaleuca trees from australia displace native wetland vegetation in florida.
5. small rainforest remnants have less diversity than larger rainforest remnants.
6. cod are caught faster than they can reproduce.
7. florida panthers were geographically cut off from other panthers about 100 years ago.
8. wild american ginseng populations have declined as a result of increased demand for the roots.

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.

answer; incomplete dominance;