RNA
~ single-stranded nucleic acid that contains the sugar ribose
DNA
~ A complex molecule containing the genetic information that makes up the
chromosomes.
Stromatolites
~ Oldest known fossils formed from many layers of bacteria and sediment.
Anthroprocene
~ New era of geological history,...
✓✓✓✓~ Geological zone that includes Oceans, glacial ice and freshwater
Catastrophism
✓✓✓✓~ One big sudden change - only true for meteor impacts. Shaping Earth's landscape
by catastrophes.
Uniformitarianism
✓✓✓✓~ Charles Lyell's idea that geologic processes have not changed throughout Earth's
history.
Divergent Boundary
✓✓✓✓~ A plate boundary where two plates move away from each other.
Geomagnetic Reversals
,✓✓✓✓~ a change in a planet's magnetic field such that the positions of magnetic north and
magnetic south are interchanged, while geographic north and geographic south
remain the same.
Pangea
✓✓✓✓~ A supercontinent containing all of Earth's land that existed about 225 million years
ago.
Atmosphere
✓✓✓✓~ A mixture of gases that surrounds the Earth.
Bioshpere
✓✓✓✓~ all the parts of the planet that are inhabited by living things; sum of all Earth's
ecosystems
Geosphere
✓✓✓✓~ the solid part of the earth consisting of the crust and outer mantle
Continental Drift
✓✓✓✓~ The hypothesis that states that the continents once formed a single landmass,
broke up, and drifted to their present locations - Proposed by Alfred Wagner
,Core
✓✓✓✓~ The central part of the earth below the mantle made of two parts - a liquid outer
shell, and a solid centre
Precambrian
✓✓✓✓~ Name for the time in earths early history that accounts for over 80% of earth's time,
but only cellular organisms lived.
Mesozoic Era
✓✓✓✓~ Age of reptiles
Paleozoic Era
✓✓✓✓~ the part of geologic time 570-245 million years ago ; invertebrates, fishes,
amphibians, reptiles, ferns, and cone-bearing trees were dominant
Lithosphere
✓✓✓✓~ A rigid layer made up of the uppermost part of the mantle and the crust.
Asthenosphere
✓✓✓✓~ The soft layer of the mantle on which the lithosphere floats.
, Mesosphere
✓✓✓✓~ The strong, lower part of the mantle between the asthenosphere and the outer core
Convergent Boundary
✓✓✓✓~ A plate boundary where two plates move toward each other.
mid-ocean ridge
✓✓✓✓~ An underwater moutain chain where new ocean floor is formed
subduction zone
✓✓✓✓~ The region where oceanic plates sink down into the asthenosphere.
Minerals
✓✓✓✓~ Molecules that occur naturally, are inorganic, solid, and have a definite and ordered
atomic structure.
Polymorph
✓✓✓✓~ One mineral that can take multiple forms (Ex: Carbon is graphite and diamond)
crystal habit
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through EFT, credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller TestTrackers. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for R226,94. You're not tied to anything after your purchase.
