Mixin Classes in Odoo 17 How to Extend Models Using Mixin Classes
Ch 9 ppt
1. Chapter 9
Biological Productivity
and Energy Flow
Case Study:
Can Enough Food be Produced
for Africa???
How much can we grow???
What will be our Carrying
Capacity?????
2. The total amt of organic matter in an
ecosystem =
It increases though growth
Plants, animals and dead are all biomass
3. Biomass is measured
in
It increases through
growth.
This is
4. Chemoautotrophs
Bacteria that use
inorganic compounds
(like sulfur) to make
their own food and
tissues
The white-ish area is a bacterial
mat feeding on methane from
beneath the ocean floor.
Hydrothermal vents
5. Energy flow
Ecosystems are all open to energy flow
Energy in food chain heat released
What is not used is lost (as heat), or stored!!!!
6. 1. kinetic-
2. potential-
energy can move back and forth between
the two
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
7. The laws of thermodynamics
1st Law – conservation of energy
8. 2nd Law- entropy increases
-energy moves to a less organized form
(living cells are holding off the forces of
entropy by channeling energy).