Which process is most directly associated with the theory of evolution?
a. Populations changing over time
b. Mutations changing the gene pool
c. Production of large numbers of offspring
d. Sexual reproduction producing variation in a population
e. Competition between members of a population for limited resources
a
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Scientists studying a group of related bird species on an island archipelago discover that these species are always more closely related to each other within an island than they are between any two islands. The most likely explanation for this result is that
A. each bird species evolved different adaptations in allopatry and then colonized the other islands. B. one bird species colonized each island and then evolved into distinct species on that island through character displacement. C. each bird species became reproductively isolated by living on a different island, then later colonized the other islands and acquired new adaptations. D. many ancestral bird species colonized each island. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about adaptive radiation? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Which of the following is NOT a steroid
hormone?
a. testosterone b. epinephrine c. cortisol d. aldosterone e. all of these are steroid hormones
Which of the following would be at the highest trophic level?
A. a lion B. a grasshopper C. a mushroom D. a grass plant
________ are toxic proteins secreted by pathogenic bacteria, and ________ are toxic components of the outer membrane of gram-negative bacteria
A) Endotoxins; parasites B) Endotoxins; botulinum toxins C) Exotoxins; enterotoxins D) Exotoxins; endotoxins