How can cultural transmission of male songs facilitate the early stages of species formation in Darwin's finches?
What will be an ideal response?
ANS:
Learning the paternal songs by young birds is a preexisting mechanism that can reinforce the reproductive isolation of partially isolated populations.
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The diverse array of photosynthetic plants and microbes is the result of different sources of CO2, and has little to do with environmental conditions
A. true B. false
What measures can the average citizen take to reduce the likelihood of infection with E. coli or other foodborne organisms?
What will be an ideal response?
There are several proposed mechanisms that could have produced organic monomers. What mechanism involves the formation of organic compounds in interstellar clouds?
a. hydrothermic vents b. organic compounds arriving on earth via meteorites c. reactions involving hot water and metal ions from rocks d. lightening fueled-atmospheric reactions e. the aggregation of dust and rock bits that were orbiting the sun to form earth
Small pox ____
a. was the target of the first vaccine b. is spread by infected cattle c. is only found in subtropical climates d. was eradicated by 1850 e. is unrelated to cowpox