#Question id: 12420
#Unit 10. Ecological Principles
#Question id: 3914
#Unit 3. Fundamental Processes
A consensus sequence
#Question id: 7477
#General Aptitude
#Question id: 3349
#Unit 11. Evolution and Behavior
Which of these evolutionary agents is most consistent at causing populations to become better suited to their environments over the course of generations?
#Question id: 9169
#Unit 9. Diversity of Life Forms
In areas of permafrost, stands of black spruce are frequently observed in the landscape, while other tree species are noticeably absent. Often these stands are referred to as "drunken forests" because many of the black spruce often "lean over" (that is, they are displaced from their normal vertical alignment). What is the most likely explanation for the unusual growth of these forests in this marginal habitat?