1. Day 2: Intro to biogeochemical cycles
Ecology
Day 2: Intro to biogeochemical cycles

2. Levels of Organization
Biosphere
Levels of Organization
Levels of Organization
Biome
Ecosystem
Community
Population
Organism

3. Warm Up: Top of 28
Which elements, besides water, make up the human body?
Nitrogen
Carbon
Oxygen

4. Bio-Geo-Chem-ical Cycles
Earth
WU:
EQ:
(Q1)
(Q2)
(Q3)
(Q4)
Summary 28 29

5. Biogeochemical Cycles
NBpg. 29
Biogeochemical Cycles
(biology + geology + chemistry)
9/11/2018
EQ: Explain how all components work together to support life.
The Earth’s Life-Support System Has Four Major Components
Atmosphere - A thin spherical envelope of gases surrounding the earth’s surface.
Hydrosphere - All the water on or near the earth’s surface (liquid, ice, water vapor) Saltwater ~71%
Freshwater ~2%
Geosphere - Consists of the earth’s hot core, thick mantle, and outer crust.
Biosphere – On Earth where life exists.
(Q1)
(Q2)

6. Biogeochemical Cycles (Cont.)
NBpg. 29
Biogeochemical Cycles (Cont.)
Matter is not used up, it is transformed, the same molecules are passed around.
In organisms, more than 95% of the body is made up of just four elements.
Oxygen, Carbon, Hydrogen, and Nitrogen
These elements are passed from one organism to another and from one part of the biosphere to another through biogeochemical cycles.
The Water Cycle
The Carbon Cycle
The Nitrogen Cycle
(Q3)
(Q4)
Summary

7. Draw onto page 28