Answer;
2) the rate at which changes occur in a type of molecule
Explanation;
The molecular clock is figurative term for a technique that uses the mutation rate of biomolecules to deduce the time in prehistory when two or more life forms diverged.
Scientists can use relaxed-clock methods to deal with variation in the rate of the molecular clock. By measuring the patterns of evolutionary rate variation among organisms, they can also gain valuable insight into the biological processes that determine how quickly the molecular clock ticks.
Animals that feed primarily on arthropods and other soft-bodied invertebrates are called insectivores. These are carnivorous animals that feed on insects. such animals include lizards, frogs, and spiders. Another alternative are the entomophages, which are humans that practice eating of insects. There are also several species of carnivorous plants, that are insectivorous.
Answer:
pure research or fundamental research which is a type of reach with the idea of improving scientific theories. :)
Hunting large prey less frequently matches with their majority resting time.