Transcript Chapter 3 Section 3-3 - Lake Stevens High School / Overview

Chapter 3
Section 3-3
Cycles of Matter
**Matter is recycled within and
between ecosystems
Water cycle
 Evaporation and Transpiration change
water from the liquid state to the gas state
 Precipitation – water vapor condenses
and falls back to Earth.
Carbon Cycle
1. Photosynthesis
and respiration take
up and release
carbon and oxygen
2. Erosion and
volcanoes release
CO2
3. Dead organisms
are converted into
fossil fuels (stores
carbon)
4. Mining and burning
fossil fuels releases
CO2.
Nitrogen cycle
 Nitrogen is needed to
make amino acids =
proteins.
– Nitrogen gas 78% of
atmosphere
– Is found in waste and
dead/decaying organic
matter
– Nitrogen fixation –
bacteria in plants
convert nitrogen gas
into useable nitrogen
that can be used to
make proteins.
The Phosphorus Cycle
 Important
because it
forms DNA and
RNA. It is not
common in the
biosphere
 Found in rock
and soil
minerals and in
ocean
sediments.