How do we know that pakicetus is related to whales and dolphins?

Answer:

Artificial selection can be described as the method by which organisms with the desired characteristics are crossed so that offsprings with better qualities can be produced.

Although artificial selection is an effective way to produce organisms with better traits, yet this technique has some consequences of its own. Growing plants and animals through this method will lead to lesser genetic variety. In the future id any disaster such as a disease infects the organisms then the entire population will be eradicated as there will be little or no genetic diversity at all.

Reclassification of fungi

Explanation:

Fungi were classified under kingdom plantae by the earlier taxonomists due to their similarities. Both of them were grown on the ground and fixed to the ground, they do not move, fungi like plants also produced fruiting bodies.

However, there were many physiological, morphological, genetic, and biochemical features which were unique and different from other kingdoms.

Although, the fungi contain similar features like vacuoles, secondary metabolites, myecelial root-like structures; fungi like plants do not have a complete vascular system.

Hence, the previous classification under plants was reconsidered and fungi were reclassified as a separate kingdom next to the protists and before the plantae kingdoms.