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In the 18th century, the Marquis de Condorcet was a political scientist who correctly perceived obscurantism as a contributing cause of the French Revolution in 1789.. In restricting education and knowledge to a ruling class, obscurantism is anti-democratic in its components of anti-intellectualism and social elitism, which exclude the majority of the people, deemed unworthy of knowing the ...
Defensive Batesian mimics, like this bumblebee-mimicking hoverfly, are the antithesis of aggressive mimics.. Aggressive mimicry stands in semantic contrast with defensive mimicry, where it is the prey that acts as a mimic, with predators being duped.
WikiProject Animals}} for use on talk pages within the projects scope. {{Missing-taxobox}} for use on articles which require a taxobox. {{Animals cleanup}} for animal-related articles requiring minor cleanup. Used in conjunction with various {} templates.
The development and continued expression of stereotypies in captive animals can quickly become an animal welfare concern. [20] Stereotypies are considered one of the most important indicators of long-term animal welfare problems. A prolonged display of stereotypies suggests that the welfare of the animal is in a peril state. [4]
Amino acids whose chirality is opposite to the norm are found on Earth, and these substances are generally thought to result from decay of organisms of normal chirality. However, physicist Paul Davies speculates that some of them might be products of "anti-chiral" life. [13] It is questionable, however, whether such a biochemistry would be ...
Fish: Dorsal view of right-bending (left) and left-bending (right) jaw morphs [4]. Many flatfish, such as flounders, have eyes placed asymmetrically in the adult fish.The fish has the usual symmetrical body structure when it is young, but as it matures and moves to living close to the sea bed, the fish lies on its side, and the head twists so that both eyes are on the top.
Animal sentinels must have measurable responses to the hazard in question, whether that is due to the animal's death, disappearance, or some other determinable aspect. [1]: 34 Many of these species are ideally unendangered and easy to handle. It is important that the species' range overlap with the range being studied. [15]
Bilateria (/ ˌ b aɪ l ə ˈ t ɪər i ə /) [5] is a large clade or infrakingdom of animals called bilaterians (/ ˌ b aɪ l ə ˈ t ɪər i ə n /), [6] characterised by bilateral symmetry (i.e. having a left and a right side that are mirror images of each other) during embryonic development.