Questions tagged [biology]

For questions about living things. Does not exclude aliens, but additional information is usually necessary (consider using "xenobiology" instead).

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What would be the optimal atmosphere for Earth's life and humanity?

Question Obviously Earth's atmosphere is just fine for life it, but is there a possibility of one composed of gases that would make life have an easier time living? If yes, what would it consist of? ...
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4 votes
1 answer
80 views

a chemical component in vampire saliva to assist with feeding

I've been thinking about vampires lately, and I came up with the idea of a vampire's saliva containing some sort of chemical or hormone that assists with feeding. I think it would probably have to do ...
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11 votes
15 answers
4k views

Why haven't humans been absorbed or exterminated by orks?

Ork advantages: Strength: orks are, on average, twice as strong as humans. Reproduction: ork females rarely die in childbirth and usually have twins. Height: orks can reach up to almost 8 feet tall....
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12 votes
9 answers
2k views

Can a forest provide enough oxygen to breathe on a low oxygen planet?

A person is placed into the middle of a forest on an alien planet. The planet is to be considered Earth equivalent in all respects (mass, size, atmospheric pressure, etc.) except atmospheric ...
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3 votes
1 answer
92 views

How strong would a humanoid need to be compared to real world humans to be able to wield a 1/4 inch thick solid steel shield easily?

I'm working on a fantasy RPG where I plan for things to start out on the more realistic side in terms of weapons and armor, but let the higher end gear move into weapons and armors that wouldn't be ...
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3 votes
1 answer
48 views

Could papillae or another muscular protrusion act like tube feet on a land-dwelling creature?

I am designing a starfish-like alien and I am wondering if a tube feet like design would work for a large land-dwelling creature? The creature unlike starfish has strong muscles in its limbs which ...
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-4 votes
0 answers
87 views

Would there be any major weather events if all air pollution suddenly disappeared?

The mages have decided that enough is enough, and the second most powerful witch in the world decides to remove pollution from the atmosphere. She ties her life-force to intrinsically depend on all ...
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5 votes
4 answers
764 views

Does it make sense for my "zombie" to drink blood?

I'm working on another arc for my story saga, and one of the characters is a "zombie". I'm putting "zombie" in quotations because he's actually the result of genetic ...
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23 votes
16 answers
5k views

What kind of scientist would be ideal for studying zombies?

One of my side characters is a scientist, and he is zombie immune. This lets him get close enough to study the zombies. However, I feel like just saying he is a "biologist" might be too ...
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8 votes
2 answers
119 views

How far across the sea can mosquitoes disperse?

One of the more interesting facts about the biogeography of Hawaii is that mosquitoes were not always present; they only arrived in the early nineteenth century, as stowaways aboard oceangoing ships. ...
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-1 votes
4 answers
145 views

How could I calculate the necessary power to kill a fictional beast?

Say we have a pterodactyl-wyvern or a huge dragon-anaconda, maybe something like a t-rex, or a sand-crocodile, or a slime--- you get the idea. Assuming one wanted to make a fictional manual with ...
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7 votes
5 answers
389 views

Why would a species take until ~50 years to 'mature' and stop being teenagers?

I'm writing fiction in a shared world that I have some control over, and for my own benefit I'm trying to figure out a reason why the Dwarves in this world wouldn't be 'mature' until they'd reached 50....
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8 votes
4 answers
209 views

How can I bypass Bergmann's rule in cold weather populations of humans?

I am working on a setting with a large native population of humans who live in a year-round freezing environment, somewhat akin to the real world Antarctic. These humans should be as biologically ...
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4 votes
3 answers
771 views

Races based on zodiac signs: what would Libra be? [closed]

I am right now in the middle of designing a race for my world, but I have run into a problem. You see, the form a member of this race has depends on when they are born in the horoscope. I have a race ...
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2 votes
1 answer
81 views

How does my symbiotic fungus silicify its own cell walls to armor its host's bones?

Fungi have cell walls which - unlike those of plants, which are made out of cellulose, xylan, and lignin - are instead made out of chitin, glucan, and mannans. A fungus I'm planning on writing about ...
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0 votes
0 answers
108 views

Does this creature have good head and neck balancing? Final(?) Draft

I feel bad and guilty for doing this one AGAIN, but I've improved and want to further perfect my hyperfixation character. I've learned more of how things work from previous iterations, now I wish to ...
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6 votes
6 answers
425 views

How long can stubble get before it becomes clear it isn't made of human hair?

The werewolves in my setting have a problem. Letting humanity at large know that either they or any other sort of magical creature actually exists is illegal, and so they have to pretend to be human. ...
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6 votes
2 answers
124 views

How do I justify the evolution of merpeople within a few million years?

I'm creating a sort of fantasy world that I'm still trying to keep scientifically accurate (it's more alternate history than anything since I'm having it take place in our world with a few points of ...
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  • 537
6 votes
4 answers
974 views

The believability of flesh eating plankton

Context I am disigning a place called the Poisoned Sea, see this question for description, there are clouds of purple plankton that eat the tough flesh of the dead God-Eaters and anything that enters ...
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6 votes
1 answer
157 views

The immediate and long term effects of slashing wounds in microgravity

What would be the specific long term and short term outcomes of slashing wounds in microgravity? The scenario is that a normal adult is slashed with a knife in a microgravity environment. Assume ...
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1 vote
0 answers
50 views

Could non-avian dinosaurs survive if introduced into modern world? [duplicate]

Lets say Jurassic park somehow came to existence and someone cloned dinosaurs genetically identical to ones of the past and tried to keep them in a zoo. Could the dinosaurs survive as is? I'm ...
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5 votes
3 answers
521 views

Geyser as drinkable water source in arid climate

My world is a life-bearing moon orbiting a gas giant. There will be plenty of geysers due to gravitational tectonic activity. Is it possible for geysers to happen in the middle of hot and arid biomes? ...
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  • 563
6 votes
2 answers
132 views

Knuckle-walk in snow / very cold climate

Is knuckle-walking efficent on snow / ice / thick snow ? Can a predator large as a polar bear evolve this? Is protecting the claw in such way, to far fetch considering the fact that the beast need to ...
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  • 563
-1 votes
6 answers
206 views

What kind of reproduction methods would allow for an only male animal species to exist?

I was reading that there are certain species of starfish which fission made them in some locations to have a scarcity of female starfish and in other locations there are species which only male ...
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2 votes
1 answer
54 views

Biological adaptations for tunicates to become terrestrial animals

I am currently designing evolution paths for tunicate which are a chordate invertebrate marine animal. In their larvae stage they are mobile and resemble tadpoles but in adult form some attach to hard ...
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4 votes
1 answer
102 views

How does the time to die from venom change for very large organisms?

Let's say that an untreated snakebite kills a human in 2-3 days. Now consider a much larger mammal, such as a blue whale. If a proportional amount (equal chance of lethality) of the same venom was ...
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-1 votes
3 answers
109 views

Why Would Serazor Wield Axes? [closed]

Serazor. These odd dragons in Dracoriri are unusual in that their eyes appear dark, but they act about as intelligent as a primate or bear (yes bears are, in fact, intelligent). With their chiseled ...
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  • 12.5k
3 votes
1 answer
127 views

How would human body evolve on a super-habitable world?

Assuming that a person can survive on a world that's super-habitable, with it's 1,5 atm atmosphere consisting in 38,4% of oxygen, with increased concentration of (~0,5%) hydrogen and (1,2%) carbon ...
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  • 63
2 votes
3 answers
1k views

How would a person's abilities change on a super-habitable world?

Suppose that humanity arrives on a super-Earth. Surface gravity = 1,24 g. Atmospheric pressure = 1,5 atm. Atmospheric composition includes 38,4% oxygen + 1,2% carbon dioxide + 0,5% hydrogen How ...
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20 votes
17 answers
5k views

How can plants reliably intentionally poison those that eat their fruit?

For sake of metaphor, I want to include a plant that bears fruit that is poisonous, with the intent that when an animal eats it, it will walk away and die within a few hours, such that their corpse ...
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11 votes
5 answers
2k views

What minimum percentage of the population can be allowed to reproduce?

A immortal dictator controls an island with about 1,000,000 people. Apparently, he's super into eugenics and wants the population of the island to be "the ultimate humans". Assume he can ...
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3 votes
3 answers
188 views

If we accidentally spread microorganisms to other planets in our solar system, could they evolve into complex life?

Is the following story plausible: a spacecraft transports microorganisms from Earth to another planet or moon in our solar system. Those microorganisms survive, and eventually, evolve into complex ...
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5 votes
1 answer
62 views

What changes to a humans physical form would occur if society lived inside the Earth?

(Mandatory I am new here, hello, nice to meet some fellow world builders, sorry for any mistakes, yikkity yak and all that) In my "world", it has been 500 years since the majority of human ...
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-5 votes
1 answer
122 views

Do we have a solution if oxygen runs out [closed]

I'm not a scientist but I know at the moment we don't have a huge amount of Oxygen in our atmosphere but what would happened if the Ozone layer was broken and all the oxygen escaped how could we ...
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3 votes
8 answers
232 views

Augmented bones: Plausible ways to strengthen the skeleton?

While the question has been asked multiple times on this site. They almost all universally boil down to, "Use Carbon nanotubes!" While CNT do have impressive material properties and can be ...
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0 votes
2 answers
110 views

Does spraying oxytocin in the face of a ferocious dragon pacify it?

Instead of a pepper spray I like to adopt a more friendly approach towards hostile animal such as a fridge sized dragon, with an aerosol spray containing oxytocin of course. I think this chemical can ...
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3 votes
3 answers
90 views

Would tall arboreal humanoids make good swimmers?

These are tall, sapient great apes that primarily live in trees, but come down for occasional food or things that catch their interest on the ground. By tall, I mean 6-7 feet on average, but because ...
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2 votes
2 answers
116 views

Could bionics help freakishly tall people live normally?

I remember hearing about the tallest person ever, as well as the medical issues he faced. Painful joints, numbness of the lower extremities, heart issues, the general stuff that affects freakishly ...
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  • 473
5 votes
6 answers
3k views

How Can I Justify the Existence of Dragons in My Realistic Post-Apocalypse Fantasy Setting? [closed]

Recently I have given myself an interesting challenge: To create an interesting fantasy world that does not have conventional "magic." In this setting I'm writing, our entire civilization ...
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  • 1,075
13 votes
7 answers
3k views

Could cybernetic spinal cord implants grant superhuman strength?

In the 2018 movie Upgrade, the quadriplegic protagonist gets a cybernetic neck implant that reconnects his spine and returns his control of his limbs. However, this implant also appears to give him ...
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  • 1,330
2 votes
1 answer
81 views

Why Would a Herbivore Become a Fang-Feeder?

In the forests of Dracoriri, one of the most dangerous herbivores is a Fangorant. This strange creature resembles an Ankylosaurus, but its entire body, even the eyelids, are covered in green scales ...
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9 votes
13 answers
2k views

What could possibly be the reason for a creature to have multiple sets of nostrils?

Nostrils accomplish two things: They filter out impurities and particles in the air. Thanks to the mucous membrane and hairs which act as a maze for the air to pass through. Snot is later drawn in to ...
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  • 8,617
-2 votes
2 answers
137 views

How Would Owls React in the 0 Gravity of a Space Station

The setting is the typical Earth is going to be destroyed by a rain of Asteroids/Bolides and so The ISS is repurposed be accommodate a lot of humans almost reaching 300 or so working together to ...
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12 votes
3 answers
1k views

How Would Humanoids Form Their Own Gems?

Sequinoans. This strange race of Amazonians has many unusual traits, but the foremost our scholars are concerned with are their gems. You see, Sequinoans somehow form gems naturally, perfectly smooth ...
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12 votes
9 answers
871 views

Could the movement of animals and plants be used by a future civilization to figure out that it isn't the first civilization?

I noticed that when it comes to the idea of humans going extinct, and how human civilization could be detected by future civilizations, a lot of the ideas for how human civilization could be detected ...
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0 votes
1 answer
71 views

Can this mind control parasite work? [closed]

I want to create a hard science parasite, this parasite consists of a symbiosis of a slime mold and neurons, it enters the host and branches by attaching to the organism. Could my organism control a ...
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7 votes
3 answers
496 views

Is my fictional climate zones world map credible?

I translated my question/text with a translator because English is not my native language. I hope there are no mistakes. Can you help me to define realistic climate zones and weather for my fictional ...
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  • 101
3 votes
2 answers
125 views

What environmental or biological factors would result in assassination being more common and more respected than soldiering?

Essentially, I am imagining this scenario: Somewhere there is a world where, in all the major civilizations, assassins are more numerous and more highly respected than soldiers. In such a world, wars ...
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3 votes
5 answers
164 views

How Can a Bug Larvae Hijack a Robot?

When inactive, the robot looks like a Steelstone arch. Steelstone resembles marble only it is virtually indestructible. The knowledge to work Steelstone was lost thousands of years ago. When the robot ...
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  • 12.5k
1 vote
2 answers
161 views

How do we breed cats that can talk?

Are you fed up with never being sure precisely what your furry companion is pestering you for? Using selective breeding techniques & (initially at least) ignoring any changes to brain structures ...
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