Students are each given a 20-gram sanple of an unknown solid compound in a clear plastic bag. They are instructed to break the material into smaller parts by gently hitting it with a hammer. Some of the parts break into large chunks and
some look like a fine powder.
Which statement correctly describes these broken pieces of the sample?
O The fine powder pieces are individual atons broken from the solid.
O The larger pieces are still compounds and the smaller pieces are elements.
O Each piece contains the same number of atoms.
O Each piece contains the same proportion of different elements.

d

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.

i think the answer is a.keratin is the pigment responsible for skin color.