Modern whales evolved from mammals that lived on land. Fossil evidence reveals that one characteristic that has changed over time is the position of whales nostris. The images below show the skills of a modern whale
and its ancestor, Pakicatus
Nostrils at front
of skull
Nostrils at top
of skull
Pakicetus
Eschrichtius
cientists think that the position of the nostrils gives modern whales an evolutionary advantage. Which of the following most likely describes how this adaptation is advantageous?
O The nostril position allows whales to obtain air more easily at the surface of the water.
The nostril position allows whales to obtain food more easily at the surface of the water.
O The space lett empty by the migrating nostrils has allowed modern whales to develop gills.
The space left empty by the migrating nostrils has allowed modern whales to develop teeth.

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Explanation: I just completed the Test.

The nostril position allows whales to obtain air more easily at the surface of the water is most likely describes the advantage of adaptation.

In biology, adaptation has three related meanings. It is the dynamic evolutionary process of natural selection that fits organisms to their environment, enhancing their evolutionary fitness. Secondly, it is a state reached by the population during that process.

The ability of living organisms to adjust themselves to their surroundings is called adaptation. Adaptations are the changes in structure or behaviour of an organism that will allow the organism to survive in that habitat.

Adaptations are unique characteristics that allow animals to survive in their environment. There are three types of adaptations: structural, physiological, and behavioral.

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