Ecology
We cover a whole unit on ecology during the 2nd semester. You'll learn all about the biosphere, energy flow, cycles of matter, producers & consumers, niches & community interactions, succession, climate, populations, biodiversity, and how to use our resources wisely.
Virtual Population Biology Lab: Paramecium (how does competition affect population size)
Ecology (overview)
Published 2012
Running Time: 10:25 min
Created by Crash Course Biology
Hank introduces us to ecology - the study of the rules of engagement for all of us earthlings.
Table of Contents
1) Ecological Hierarchy 02:01:2
a) Population 02:12
b) Community 02:26:1
c) Ecosystem 02:50
d) Biome 03:22:1
e) Biosphere 03:51
2) Key Ecological Factors 04:07
a) Temperature 05:06:1
b) Water 05:37
3) Biome Type 06:03:1
Nitrogen & Phosphorus Cycle
by CrashCourse
Published on Dec 31, 2012
length ~ 9:21
Hank describes the desperate need many organisms have for nutrients (specifically nitrogen and phosphorus) and how they go about getting them via the nitrogen and phosphorus cycles.
NASA Earth Observatory
http://earthobservatory.nasa.gov/
This video explains what the greenhouse effect is and what causes it.
Symbiosis
By Untamed Science
run time: 5:16
Have you ever wondered what happens when organisms live together? This video explains parasitism, commensalism, and mutualism.