Evidence of evolution.docx

2 Pages
105 Views
Unlock Document

Department
Biological Sciences
Course
BIO SCI 97
Professor
Rahul Warrior
Semester
Fall

Description
Evidence of evolution Evolution: “descent with modification” ◦ Different species are related, not independent creations. ◦ Species change thru time.  Determine age of Earth and different strata: radiometric dating  Radioactive decay: loss of atomic particles from nucleus at a regular rate that is isotope-specific  Radioactive decay discovered about 1900  Took over 60 years to work out details of U-238 decay Uranium-238: 4.5 billion years -- volcanic rock Potassium-40: 1.3 billion years Carbon-14: 5,700 years -- date organisms that died within last 50,000 years.  Hard parts mineralized in sedimentary rock.  Pressure turns sediments into rock: ◦ Sand à Sandstone ◦ Clay à Shale ◦ Shell à Limestone • Use radiometr
More Less

Related notes for BIO SCI 97

Log In


OR

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit