#Question id: 15381
#Unit 8. Inheritance Biology
#Question id: 9149
#Unit 9. Diversity of Life Forms
In creating global climate patterns, which of the following factors is the primary cause of all of the other factors that are listed?
#Question id: 11849
#Unit 6. System Physiology – Plant
According to chemiosmotic model for polar auxin transport, auxin _____A_______is driven by the______B________ across the plasma membrane, while auxin ___C_____is driven by the_________D_________
#Question id: 16320
#Unit 7. System Physiology – Animal
#Question id: 12098
#Unit 10. Ecological Principles
The herbaceous plant Achillea lanulosa is widespread in the Northern Hemisphere. Phenotypic variation in the species has been extensively studied along an altitudinal gradient from sea level to over 3,000 meters. In California there is conspicuous variation in height; alpine plants are only several centimeters tall while those in the San Joaquin Valley may reach a height of 1.8 meters. Adaptation to different local environments also results in variation in physiological processes such as photosynthetic rate, resistance to cold, and the timing of dormancy.
The morphological variation shown by Achillea lanulosa illustrates