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2. Respiratory system - Wikipedia

   en.wikipedia.org/wiki/Respiratory_system

   Respiratory system. The respiratory system (also respiratory apparatus, ventilatory system) is a biological system which consists of specific organs and structures used for gas exchange in animals and plants. The anatomy and physiology that make this happen varies greatly, depending on the size of the organism, the environment in which it lives ...

3. List of feeding behaviours - Wikipedia

   en.wikipedia.org/wiki/List_of_feeding_behaviours

   List of feeding behaviours. Circular dendrogram of feeding behaviours. A mosquito drinking blood (hematophagy) from a human (note the droplet of plasma being expelled as a waste) A rosy boa eating a mouse whole. A red kangaroo eating grass. The robberfly is an insectivore, shown here having grabbed a leaf beetle.

4. Organisms at high altitude - Wikipedia

   en.wikipedia.org/wiki/Organisms_at_high_altitude

   Tardigrades live over the entire world, including the high Himalayas. [4] Tardigrades are also able to survive temperatures of close to absolute zero (−273 °C (−459 °F)), [5] temperatures as high as 151 °C (304 °F), radiation that would kill other animals, [6] and almost a decade without water. [7]

5. Skeletal changes of vertebrates transitioning from water to land

   en.wikipedia.org/wiki/Skeletal_changes_of...

   The traits enabled animals to check area on land for safe spots if being chased by a predator in water, as well as being useful for searching for prey items above the water. The water-based lateral line system was used substantially by these aquatic tetrapods to detect danger from predators. [ 2 ]

6. Adaptive behavior (ecology) - Wikipedia

   en.wikipedia.org/wiki/Adaptive_behavior_(ecology)

   Adaptive behavior (ecology) In behavioral ecology, adaptive behavior is any behavior that contributes directly or indirectly to an individual's reproductive success, and is thus subject to the forces of natural selection. [1] Examples include favoring kin in altruistic behaviors, sexual selection of the most fit mate, and defending a territory ...

7. Adaptation - Wikipedia

   en.wikipedia.org/wiki/Adaptation

   Adaptation is the evolutionary process whereby an organism becomes better able to live in its habitat or habitats. [25][26][27] 2. Adaptedness is the state of being adapted: the degree to which an organism is able to live and reproduce in a given set of habitats. [28]