Biology
Exploring "Why" questions about Biology
483 articles
Why are minorities always talked about as if they are a single, homogeneous group?
This subreddit has become nothing but a medium to faux-innocently pose extremely complex questions in an incredibly leading way in order to push a political viewpoint.
Why are there no (cell phone) videos of the Cologne NYE 2015 sexual assaults while they were occurring?
There are probably more... but if you committed a crime, why would you want to broadcast your crime all over the internet?
Why do beech trees and hedges retain dead leaves on their branches, while most other species of tree shed them?
They give off the appearance that they are keeping them but really the leaves are fully abscised, that is, the plant has cut off all nutrients from the leaf by walling it off. The only reason why it s
Why are speakers located on the back of cell phones instead of the front?
Space. Big screen, camera, microphone, ear speaker, light sensor, notification led. Some phones do it (HTC one) but others just put it on the back because it still works that way too.
Why are humans the only species that needs brush their teeth? Do other species’ teeth rot and fall out faster than humans?
We're the only species who has invented stuff like Twinkies, Ho-Hos, Nutella, Toblerone, Reese's Pieces, sugar cane cola, macadamia nut ice cream, rocky road, cherry jam, Dr Pepper and honey chai latt
why generic USB 3 enclosures are abundant and cheap while Thunderbolt enclosures are rare and expensive despite both being Intel set standards
I would have to guess it is simply a result of there being far more manufacturers of USB 3 enclosures than thunderbolt ones, the more supply and competition there is the cheaper products generally end
Why did viruses evolve to kill their hosts?
Most don't, it is a hindrance. Most lethal viruses (and the ones you hear the most about precisely because of their lethality) come from animals, for example smallpox from cows, HIV probably from monk
why plants leaves are green and not another more absorbent amalgamation of colors(generally)
There are different type of factors that determine what color plant leaves are. There is chlorophyll, carotenoids, anthocyanins, and tannins that pretty much determine the color. The fact that leaves
Why are there so many different species of animals, yet we as humans are all one species?
There have been many different species of "humans" that did coexist at times. This site has a list of some of our relatives that died out along the way, with approximate times of extinction so you can
Why is the ball a universal toy for all species?
What do you mean by "all species?" There are millions of species, and most don't play with balls.