Chapter 4 Outline
Case Study: Frozen Frogs
CONCEPT 4.1 Each species has a range of environmental tolerances that determines its potential geographic distribution.
- Species distributions reflect environmental influences on energy acquisition and physiological tolerances
- Individuals respond to environmental variation through acclimatization
- Populations respond to environmental variation through adaptation
CONCEPT 4.2 The temperature of organisms is determined by exchanges of energy with the external environment.
- Temperature controls physiological activity
- Organisms influence their temperature by modifying energy balance
CONCEPT 4.3 The water balance of organisms is determined by exchanges of water and solutes with the external environment.
- Water flows along energy gradients
Case Study Revisited: Frozen Frogs
Connections in Nature: Desiccation Tolerance, Body Size, and Rarity
