Refer to the paragraph on dark-eyed junco birds. the ucsd campus male junco population tails are about 36% white, whereas the tails of males from nearby mountain populations are about 4045% white. the founding stock of ucsd birds was likely from the nearby mountain populations because some of those birds overwinter on the ucsd campus each year. population sizes on the ucsd campus have been reasonably large, and there are significant habitat differences between the ucsd campus and the mountain coniferous forests; ucsd campus has a more open environment (making birds more visible) and a lower junco density (decreasing intraspecific competition) than that in the mountain forests. given this information, which of the following evolutionary mechanisms do you think is most likely responsible for the difference between the ucsd and mountain populations?

a. gene flow
b. genetic drift
c. natural selection
d. mutation

Ashort, vertical, solid, or fleshy stem possessed by gladiolus and which is used in reproduction is termed a

Populations of blue-winged warblers, a type of bird, migrate south in the winter and return to canadian breeding grounds in the spring. as global temperatures have increased due to climate change, spring has started arriving in the warbler's breeding grounds earlier in the year, before the warblers return. warblers now arrive at their breeding grounds too late to select ideal nesting sites and to feed on important early-spring food sources how are populations of blue-winged warblers most likely to be affected by the earlier arrival of spring? o a. populations will go extinct since the warblers will stop migrating to breeding grounds. b. populations will be unaffected since most species can quickly adapt to effects of climate change. c. populations will increase since warmer temperatures are generally beneficial to survival, d. populations will decline since individuals will be less likely to successfully reproduce, reset next

Clues to ecological principles are given in numerous passages of the bible. a bible study of ecology actually opens the doors to better understanding of god's love and concern for the earth. use a concordance to locate bible passages associated with words concerning our stewardship of the earth. you may use a dictionary to find synonyms for these words: dominion replenish subdue judgment stewardship find each of the passages using these words related to principles of ecology. list all passages by quote, book, chapter, and verse under each word. use your own interpretation to rewrite what you think each verse is saying. after your discussion of each of these words, ask one other person to explain his understanding of the word and a related verse without any hints. summarize what he tells you. a concluding paragraph for each of the words should be written noting similarities and differences between your interpretation and that of each person consulted.