Class Notes (834,037)
United States (323,615)
Biology (246)
BIO 121 (112)

BIO 121, October 2nd

2 Pages
Unlock Document

BIO 121
Jason Wiles

BIO 121, Class Notes - October 2nd Solar Energy • Less than one billionth of the sun’s total energy reaches Earth’s outer atmosphere • Thirty percent is reflected back to space immediately • Less than one percent drives the wind and ocean currents • 0.02 percent captured by photosynthesis • Twenty-three percent runs the hydrological cycle • Fourty-seven percent is absorbed by the atmosphere • All solar energy is ultimately re-radiated to space as heat Energy One-way Flow • Energy from sun goes through a one way flow chart • First Trophic Level: Producers, plants • Second Trophic Level: Primary consumers, mouse • Third Trophic Level: Secondary consumers, snake • Fourth Trophic Level: Tertiary consumers, hawk • Decomposers Materials in Ecosystems • Cycle and recycle between organisms and the abiotic environment • Sun goes one way, recycling will be used over and over again EX. Carbon Cycle Energy flows one way through the system back out to the universe • Tree of Life • All living things are related via common ancestry Bacteria • Bacteria include the vast majority of prokaryotes of which most people are aware •
More Less

Related notes for BIO 121

Log In


Join OneClass

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

Sign up

Join to view


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.