Science-Evolution Word Scramble
|
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Question | Answer |
Name the 4 eras from the youngest to the latest | cenozoic, mesozoic, paleozoic, precambrian |
What periods are in the 1st era? (2) | Quaternary & Tertiary |
What periods are in the 2nd era? (3) | Cretaceous, jurassic, triassic |
What periods are in the 3rd era? (3) | 1st, 2nd, Cambrian |
Towards the end of this era, creatures w/ more than 1 cell evolved, including jellyfish and _______. | Precambrian,sponges |
What 3 types of worms were formed int the Precambrian era? | segmented worms, flat worms, roundworms |
2.5 billion-542 million yrs. ago | precambrian |
prokaryotes | single cell organism w/ nucleus-precambrian |
eukaryotes | single cell organism w/ no nucleus-precambrian |
542-488 million yrs. ago | cambrian |
488-359 million yrs. ago | 2nd |
359-248 million yrs. ago | 1st |
144-165 million yrs. ago | cretaceous |
213-144 million yrs. ago | jurassic |
248-213 million yrs. ago | triassic |
65-1.8 million years ago | tertiary |
1.8 million-___ | quaternary |
mammals begin to evolve and take over | tertiary |
when dinosaurs begin to dominate the earth | triassic |
the high point if the dinosaurs, first birds, flowering plants, mammals | jurassic |
flowering plants dominate, flying insects develop dinosaurs become extinct | cretaceous |
1st reptiles and seed plants and cone bearing trees | 1st |
first land plants, jaw fish, amphibians, alge is dominant, mushrooms & fungi | 2nd |
simple inverderbraes, arthropods | cambrian |
Darwin spent __ years reaserching findings from the HMS Beagle trip | 20 |
Darwin focused on: (2) | Finches, tortises |
After coming home, Darwin started to investigate: (2) | breeds of dogs, varieties of flowers |
4 factors that govern natural selection | 1)organisms produce more offspring than can survive: 2)variations are found among individual species: 3) some of the variations enable members of a population to survive and reproduce better than others: 4) over time, more of the individuals with the help |
Created by:
bml9913
Popular Science sets