Evolution Crossword

The formation of a new species.
Separation of a species or population so that they no longer interbreed and evolve into two separate species
For of reproductive isolation in which two populations develop differences in courtship rituals or other behaviors.
When two populations are separated by geographic barriers. (i.e. rivers, mountains, bodies of water, etc.)
When two or more species reproduce at different times.
Species that no longer exist, help scientists reconstruct the past
the similar nature of the flight/wings of insects, birds, pterosaurs, and bats. All four serve the same function and are similar in structure, but each evolved independently.
two or more distinct species share a common ancestor from which they diverged.
predator-prey, host-parasite, and other competitive relationships between species.
A species of sea animals lives, breeds, and dies for thousands of years. Suddenly, the sea level changes and the animals must adapt.
the relatively fast evolution of many species from a single common ancestor.
commonly found, widely distributed fossils that are limited in time span.
the first appearance of plant life on Earth, the first appearance of animals on Earth, the formation of Earth's mountains, and the extinction of the dinosaurs.
a period of time in history that is unified by cultural or historical factors.
the adolescent years.
a space of time between two events or a portion of time.
when most major animal phyla appeared in the fossil record.
Spirulina
the host cannot survive without the other,
the Cambrian, Ordovician, Silurian, Devonian, Carboniferous (in the U.S., this is divided into the Mississippian and Pennsylvanian Periods), and Permian.
Dinosaurs and other archosaurs, such as the pterosaurs, dominated the land
Cave lions, sabre-toothed cats, cave bears, giant deer, woolly rhinoceroses, and woolly mammoths were prevailing species
a mammal of an order that includes the lemurs, bushbabies, tarsiers, marmosets, monkeys, apes, and humans
primitive primate of a group that includes the lemurs, lorises, bushbabies, and tarsiers.
resembling a human being in form.
a primate of a family that includes humans and their fossil ancestors
using only two legs for walking.