The correct answer is - The Mesohippus is older than the Pliohippus.
Trying to date the fossils according to the layers in which they are found can be very useful and relatively accurate. It has to be taken in consideration though that the layers of rocks should not be disturbed by geological processes, as that can give totally different results.
In this case, the fossils of the Pliohippus are found in layers closer to the surface, while the fossils of the Mesohippus are found in layers that further down, bellow the layers in which the Pliohippus fossils are found. This means that the Pliohippus is an animal that lived after the Mesohippus lived, thus making it a younger species, while the Mesohippus would be the older species.
For example AUG is start but UAG is start that is a frameshift mutation that has different bases but same amino acid
The correct answer is option b, that is, circadian rhythms.
A roughly 24-hour cycle in the physiological procedures of living beings, comprising animals, plants, fungi, and cyanobacteria is known as a circadian rhythm. In a strict sense, circadian rhythms are produced endogenously, however, they can be modulated by external cues like temperature and sunlight.
The circadian rhythms can affect the release of the hormone, sleep-wake cycles, digestion and eating habits, the temperature of the body, and other essential functions of the body.
Compare reef and lion population sizes , amount of fish , peaked at 6 , lionfish started to increase population size at round 11 and 12, reef fish started to decrease as lion fish grew .
