Fossils of thrinaxodon, a species that lived during the triassic period, have been found in both south africa and antarctica. thrinaxodon had a reptile-like skeleton and laid eggs, but small depressions on the front of its skull suggest it had whiskers and, therefore, fur. thrinaxodon may have been warm-blooded. the fossils of thrinaxodon are consistent with the hypothesis that ) fossils found in a given area look like the modern species in that same area
b) the environment where it lived was very warm
c) mammals evolved from a reptilian ancestor
d) antarctica and south africa separated after thrinaxodon went extinct

C) mammals evolved from a reptilian ancestor

Explanation:

Mammals, amphibians, and reptiles are tetrapods. Reptiles and mammals are shown to be originated from a common ancestor, the early tetrapods which in turn diversified into two lineages. One of the lineages evolved into synapsids and the other gave rise to reptiles and birds. Synapsids diversified into two lineages one of which later formed mammals.

According to the given information, fossil records of Thrinaxodon have a reptile-like skeleton and were oviparous like reptiles. However, the presence of furs and the possibility of being warm-blooded make it like a mammal.

Reptiles are cold-blooded egg-laying tetrapods while mammals are warm-blooded viviparous tetrapods. The presence of some of the features from both the groups in Thrinaxodon provides proof that mammals evolved from a reptilian ancestor.

a physical change is being made.

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.