Marine debris is best described as being composed of

Marine debris consists of most anything used and discarded by humans.

Explanation:

The human activities like household chores, packaging and dumping wastes generated a lot of harmful wastes which cannot be treated and thus they pollute the environment.

The polythene bags, plastic sheets, and plastic broken parts of articles can become chief pollutants as they are discarded by the humans. These pollutants can be carried away by the water currents to the seashores and may deposit them in the marine debris.

the water is warmed up by the sun and then it evaporates into the atmosphere. the sunlight warms the water by its heat. water is then cooled down and condensation takes place. the water then finally returns back to the earth by the process of precipitation in the form of rain or ice.

explanation:

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.