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Do animals living in places with a little light need eyes?
YES
Why do cave dwelling animals have sightless eyes?
Cave dwelling animals may have sightless eyes due to a lack of light in their environment. Without light, there is no need for functional eyes, so evolution gradually led to the reduction or loss of eyes in these species. This adaptation helps these animals conserve energy and resources that would otherwise be used to maintain vision.
Which organ is absent or vestigial in animals living in burrows?
The blind mole rat has a thin layer of skin covering its eyes, which is considered to be vestigial. There are also cavefish which have eyes that are vestigial. (There are also other vestigial traits in other animals that do not burrow.)
Why is it that some fish living in dark caves do not have eyes?
The adaptation of eyes was lost because it gave no competitive advantage.
Do any animals live in caves?
Numerous animals live in caves, either exclusively or part of the time. Troglobites - not to be confused with troglodytes - are animals thatlive their entire lives in the dark part of caves, troglophiles are animals that sometimes occur outside a cave, but mostly deep in it, and trogloxenes are animals that are capable of surviving inside caves but are mostly found outside of it, like the extinct cave bears. Stygobites areanimals found in groundwater in or between caves. True troglobites lack functional eyes. Their eyes may be vestigal, covered beneath a layer of skin. Exclusive cave animals are called caverniculous. Some animals that live in caves include salamanders, the Cave Dwelling Rat Snake, many fish, bats, and many arthropods, including insects, millipedes, harvestmen, crayfish, springtails, spiders, etc. Smaller fauna are numerous, as their energy needs are less than large animals, and include cave-exclusive annelids, leeches, mollusks, mites, etc. Many troglobites have slow metabolisms to account for the scarcity of food in caves. Animals that spend a lot of time in caves eventually evolve exclusive adaptations to survive the extreme environment, such as better hearing at the expense of sight, or the ability to sense delicate vibrations. Many animals that live in caves lose their pigment, becoming ghostly white, as the signaling role of pigmentation in useless in a pitch black environment. Lack of functioning eyes is also accompanied by the extension of limbs and antennae in insects, which are used to survey the environment through tactile means. True cave insects also have either reduced or absent wings. The cave environment is distinguished by negative characteristics: a lack of distinction between night or day, summer or winter. There is little change in temperature or humidity, though cool air currents do flow through most caves. Food can only come in through the outside, either living, in the form of animals seeking refuge, or dead, by organic material carried in through streams. Fungi feeds on this organic matter, and numerous animals in turn feed on the fungi. Butterflies that hibernate in caves are frequently eaten by grasshoppers, which are in turn eaten by bats.
Can a brunette be born with blue eyes permanently?
I believe so.
How do animals keep snow out of their eyes?
Animals keep snow out of there eyes by blinking :)
Why do animals close their eyes at night?
The animals close their eyes at night because at night humans show their inner beauty and the animals get digusted and close their eyes .
Do people and anials have the same eyes?
"Do people and animals have the same eyes?" Animals can have the same eyes as a human being. But most of them don't have the eyes of an human being.
Is all people have eyes all animals have eyes therefore all people are animals a valid syllogism?
I think to make it valid, your second premise would need to be "Only animals have eyes". The statement "All animals have eyes" allows that there could be something that has eyes that is not an animal, so it does not require the conclusion tht all people are animals.
What animals have eyes on stalks?
crabs have eyes on stalks :)
Do all nocturnal animals have beady eyes?
All nocturnal animals do not have beady eyes. An example of a nocturnal animal that does not have beady eyes is the cat.
