Read the following passage from the biology department at university of california, berkeley. northern elephant seals have reduced genetic variation because hunting by humans reduced their population size to as few as 20 individuals at the end of the 19th century. their population has since rebounded to over 30,000, but their genes still carry the marks of this near extinction: they have much less genetic variation than a population of southern elephant seals that was not hunted as intensely. which of the following best describes how the population has evolved? a)the population has not evolved because there was no change in allele frequencies. b)the population has not evolved because it has grown. c)the population has evolved because it has grown. d)the population has evolved because there was a change in allele frequencies.

D. The population has evolved because there was a change in allele frequencies.

Explanation:

Just took the test ED2020

the correct answer is - d. china has a large and growing population.

the fact that china has a large (the biggest) population, and it is still growing, doesn't hinder the agriculture production in the country. in fact, it can for increased production in the agriculture, since there's more labor force, as well the sheer mass of people produces lots of scientists that come up with new inventions as to how to improve this sector. nice example is the inner mongolia region in china, in general dominated by the gobi desert, but few scientist came up with a nice idea as to how to make the region productive by using plants that are very resistant to droughts, so lots of people have been employed, and the region is becoming greener and greener each year, and the production of food in this region is also increasing.