Darwin theorized that evidence for the evolution of new species can be found in homologous body structures. which observation supports this theory? a. the beaver and the capybara are similar species that inhabit similar environments in separate continents. b. the size, shape, and variety of squid, octopi, and chambered nautiluses have changed over time. c. the limbs of reptiles, bird, and mammals resemble the fins of the ancient lobe-finned fish. d. the embryos of many animals with backbones are very similar.

option c is the correct answer.

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.