In 1977, Sea Otters were put on the endangered species list. Their population decline was due to hunting and trapping for their fur. During this period, there was a large decline of kelp. Use the food web, and include important relationships, to explain what could explain the decrease in kelp population.

The information provided is not enough. But i will answer for you the best i can.

Since there is population decline of sea otters. The top food web have decline which led to the fish population to explode. There is more fish to consume the kelp, so that why there is a decline in kelp.

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.

the offspring would all be white. if the parents are both white flowers then they have the genotype rr, which when crossed results in an all white punnet square.