and Energy Flow
Can Enough Food be Produced
How much can we grow???
What will be our Carrying
The total amt of organic matter in an
It increases though growth
Plants, animals and dead are all biomass
Biomass is measured
It increases through
Bacteria that use
(like sulfur) to make
their own food and
The white-ish area is a bacterial
mat feeding on methane from
beneath the ocean floor.
Ecosystems are all open to energy flow
Energy in food chain heat released
What is not used is lost (as heat), or stored!!!!
energy can move back and forth between
Entropy-is the measure of disorder, wasted
energy - becomes more random, can be
sound or light but is mostly heat, everything
always moves towards entropy
The laws of thermodynamics
1st Law – conservation of energy
2nd Law- entropy increases
-energy moves to a less organized form
(living cells are holding off the forces of
entropy by channeling energy).