krissie。

homologous: structures that share a common origin but may serve different functions in modern society
analogous: structures similar in function but not in origin or anatomical structure

Comparing orca (killer whales) to tiger shark:
Living mostly in water
Possessing structures for swimming
Feeding on fish (often or usually)
Having smooth skin and lacking body hair
Lacking earlobes
Having relatively large size

Comparing orca to bats:
Having lungs to obtain oxygen
Having skeleton comprised of bone
Being warm-blooded
Having a four-chambered heart
Having true bony teeth
Giving birth without laying eggs
Producing milk in mammary glands
Having young that develop internally through placenta


One has to be analogous and one homologous, but idk which one and why. D:

From Master Mind: The Rise and Fall of Fritz Haber, the Nobel Laureate Who Launched the Age of Chemical Warfare by Daniel Charles.

( unfinished, will never be finished )