Transcript Matter cycles through ecosystems.

Matter cycles through
ecosystems.
Chapter 1
Section 2: Carbon Cycle
Nitrogen Cycle
Carbon cycles through
ecosystems.
 Carbon is an element found in all living
things.
 Carbon Cycle: the continuous movement
of carbon through Earth, its atmosphere,
and the living things on Earth
Carbon cycles through
ecosystems.
 Plants use Carbon Dioxide in photosynthesis to
make sugar
 Animals release Carbon Dioxide during
respiration
 When living things die and decay the rest of
the carbon that makes up living things is
released
Carbon cycles through
ecosystems.
 Marine organisms release carbon dioxide
during respiration
 Carbon is also deposited on the ocean
floor when organisms die
Carbon cycles through
ecosystems.
 Remains of plants and animals are
buried for millions of years and decay
slowly changing into fossil fuels
 This carbon returns to the atmosphere by
combustion, the burning of fossil fuels
Nitrogen cycles through
ecosystems.
 Nitrogen cycle: continuous cycle of
nitrogen through Earth, its atmosphere,
and the living things on Earth
 Nitrogen is a clear, colorless, gas
Nitrogen cycles through
ecosystems.
 Plants take in certain nitrogen
compounds through their roots
 Lightening strikes change nitrogen into
a form that plants can use that falls to the
ground when it rains
 Nitrogen-fixing bacteria live in oceans
and soil when organisms die,
decomposers break them down releasing
the nitrogen