Afossil of a sable antelope was observed in the topmost layer of soil. a fossil of a zebra was found below it. the bottom layer contained fossils of a blue antelope. this discovery tells us that . the sable antelope is the .

According to the law of faunal succession, the fossils that are found at the bottom layer are considered to be the oldest, whereas the fossils that are present on the top layer is the youngest.

From the given question, the sable antelope is the youngest, and blue antelope is the oldest. This could suggest that the blue antelopes have undergone evolution and with time, they transformed into the horse, which were found to be present in the middle layer as an evidence. And this animal has further undergone evolution and formed the sable antelopes.

1. sable antelopes existed before blue antelopes

2. youngest fossil

Explanation:

i took the test :p

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.