Sometimes a species of plant becomes two species when the first species produces offspring with double the number of chromosomes. The two species continue to occupy the same habitat. This is an example of what type of speciation

Most of the fossils found in virginia are in the coastal plain, valley, ridge, and appalachian plateau regions, best suggesting that these geographic provinces a) were once covered by seawater. b) are the oldest parts of virginia. c) have a great deal of karst topography. d) have large amounts of sedimentary rock.

Select the correct answer from each drop-down menu proteins are

Where is the nictitating membrane found? a. between the eyelid and the eyeball b. between the retina and the optic nerve c. between the outer and middle ear d. in the organ of corti in the middle ear