Question

Does evolution stop?

Answer 1

Evolution refers to the shift in a species' characteristics over many generations as a result of natural selection. The theory of evolution is based on the assumption that all animals are related and evolve over time.
- Evolution relies on genetic variation in a population which affects the physical characteristics of an organism.

Complete answer:
- Evolution does not end. Every population of living organisms is evolving to some degree, though the degree and rate of change vary greatly from one community to the next. Populations that are exposed to a significant shift in environmental factors, whether it is a new predator or a new island to spread to, grow much faster. This is because natural selection drives evolution, and as the climate changes, selective pressures shift, favouring one segment of the population more heavily than before the transition.
- Evolution happens all the time, though at rates much too slow to be seen in days, weeks, or even years. However, the consequences of evolution can be felt in almost every aspect of our everyday lives, from medical and agricultural issues to the process of selecting a suitable mate.
- One species does not "morph" into another or even others — at least not in a moment. The evolutionary process of speciation explains how one population of a species grows over time to the point that it is distinct from the "parent" population and can no longer interbreed. Something must prevent two populations from combining in order for one to diverge enough from the other to become a new species.

Note:
- It took 20 years for Charles Darwin to write his book called ‘Origin of species’.
- The planet would be covered by the offspring of a single pair of animals and plants if there was no fight for survival.
- Every living thing is descended from a bacterium that existed billions of years ago. Biological evolution is thought to have begun about 3.7 billion years ago.