16. Which of the following would be LEAST likely to lead to speciation? *
O
A flock of sparrows is blown off course to an island far from their natural habitat.
A mutation arises within a population of orchids that prevents the orchids from
breeding with other populations of orchids.
O
A volcanic eruption creates a barrier separating two populations of rodents.
A single coconut is carried to a remote island in the Pacific Ocean by water currents.

The body is protected against harmful flu viruses by

How can a geological time scale best be reconstructed? a) comparing vestigial structures in living species b) comparing homologous structures in living species c) examining homologous structures in fossil remains d) examining the written records of scientists from past cultures

Even though the ostrich is a flightless bird, ostriches still possess wings that stretch approximately two meters across when fully extended. scientists speculate that when dinosaurs became extinct, some of the birds that lived during that time became land dwellers since they were able to consume the food that the dinosaurs once ate. over time, these species grew larger and heavier. eventually, the ostrich species became too big to fly. the wings found on ostriches are known as a. analogous structures. b. homologous structures. c. vestigial structures. d. symmetrical structures.