- most fundamental unit of ecology
- has a membrane or other covering across which it exchanges energy and
materials with its environment.
o this separates internal processes and structures of the ecological
system from external resources and
Ecology Chapter 2
Challenges posed by living in an aquatic environment,
The properties of water
The need to balance salt and water concentrations
The movement of gases including carbon dioxide and oxygen
The wide range of temperatur
Ecology Chapter 3
Most terrestrial plants obtain nutrients and water from the soil
- most use their root systems to uptake water and nutrients and they have developed a
number of adaptations to make this possible.
- Plants need carbon, hydrogen, and oxyge
Chapter 4 concepts
1. Ecological systems and processes vary in time and space.
2. Variable environments favor the evolution of variable phenotypes.
3. Many organisms have evolved adaptations to variation in enemies,
competitors, and mates.
4. Organisms ca
Chapter 5 concepts
Earth is warmed by the greenhouse effect
There is an unequal heating of Earth by the Sun
The unequal heating of Earth drives air currents in the atmosphere
Ocean currents also affect the distribution of climates
- sometimes adverse conditions are so severe that individuals cannot
acclimate, or the changes required would not be worth the cost
- its the seasonal movement of animals from one region to another
- the decision to migrate is a plastic behavio