Imagine a scenario in which part of a population of south american finches is blown by a storm onto an island far offshore and manages to survive and reproduce there for a period of 10,000 years. after that period, a climate change results in lower sea levels and the reconnection of the island with the mainland. members of the formerly isolated island finch population can now interact freely with members of the original mainland population. which of the following observations would, by itself, lead you to conclude unequivocally that the island finch population had evolved into a distinct species?
a. the island birds all have red feathers, but the mainland birds have only green feathers.
b. individuals from the different populations sometimes mate with each other, but all of the resulting eggs are sterile.
c. individuals from the different populations seem to mate freely with each other, and the resulting offspring mate freely with either island birds or mainland birds.
d. individuals from the different populations feed on the same kinds of seeds in the same habitats and frequently direct courtship behavior toward members of the other population.
e. hybrid offspring of matings between individuals from the two populations do not look like either parent.

Is a measure of the resistance to flow. a high liquid has a high resistance to flow and flows slowly. the ancients thought everything in the world was made of 4 we now know that there are 94 naturally occurring and scientists have created another 24 i am certain they will create even more. honey flows slowly because it has a high to flowing. a can be separated by physical means because it contains more than one pure substance and 2 pure substances are not chemically bonded to each other. a cannot be separated by physical means. all matter is made up of all elements are with the same number of protons. if it is just a single or many bonded together, if all of them have the same number of protons, it is an element. in a piece of pure iron metal, all the are joined together, that piece of iron metal is called elemental iron. a single of iron is called elemental iron. a mixture has differences from place to place. we might need a microscope to see them or they might be obvious to the unaided eye. there are surfaces separating it into different phases. a mixture is the same everywhere. it is uniform. there are no surfaces separating it into different phases. if different kinds of atoms (different elements) are bonded together by their electrons, it is called a there are physical means of to isolate the different pure substances in a mixture and there are chemical means of to isolate the different elements in a compound. 1. element 2. compound 3. mixture 4. heterogeneous 5. homogeneous 6. pure substance 7. atoms 8. separation 9. viscosity 10. resistance