ANSWER 1
Birds can fly because they have adapted to their environment in order to survive. Some adaptations a bird has made are: hollow bones, thin legs,a light beak, and strong flying muscles that humans don't have.
Us, we are too heavy for our strength, or too weak for our weight to be able to fly.
Answer 2
With regard to flying, birds have many advantages over humans:
Answer 3
A bird's heart beats up to 420 times per minute but a human's heart beats only 72 times on an average. So our heart cannot produce sufficient energy required to make us fly.
Answer 4
It's mainly about strength-to-weight ratio. When living things get bigger, they get heavier faster than they get stronger. A muscle that's twice as strong is four times as heavy, and will need four times the blood flow, oxygen and nutrients to be as effective as the smaller muscle. Something human-sized that's built as a human just can't get the required strength-to-weight ratio - even if we would make us some really slick wings.
Answer 5
We don't live in a cartoon or Anime where such thing are made possible.
because God made us humans most people prefer that we are not animals but we are technically but for animals without Wings??
well first of all humans don't have the proper bones, birds bones are hollow so they are lighter, also humans havn't evolved enough to have wings, but in millions of years humans may grow wings
By themselves, unassisted - no.
It's mainly about strength-to-weight ratio. When living things get bigger, they get heavier faster than they get stronger. A muscle that's twice as strong is four times as heavy, and will need four times the blood flow, oxygen and nutrients to be as effective as the smaller muscle. Something human-sized that's built as a human just can't get the required strength-to-weight ratio - even if we would make us some really slick wings.
no because they dont have wings nor can pigs cant either,and icurus is son off someone speciel.!!!
no try jumping off something and flapping your arms!!! JK!
By ourselves, unassisted, on Earth - we can't. Unless you think of balloons or jetpacks.
It's mainly about strength-to-weight ratio. When living things get bigger, they get heavier faster than they get stronger. A muscle that's twice as strong is four times as heavy, and will need four times the blood flow, oxygen and nutrients to be as effective as the smaller muscle. Something human-sized that's built as a human just can't get the required strength-to-weight ratio - even if we would make us some really slick wings.
W/o gravity, flying is EASY. Gravity is the force that pulls us to the ground. Remove that and we'd be able to almost float on air. Flapping our arms still wouldn't do the trick, but with the help of some crude wings we'd be able to swim - if not fly - through the air.
No, humans can not fly. We don't have the correct abilities and body structure to be able to fly without a plane, jet pack, or holding onto a really big bird.
Sure.
You'd need a glider, some thermals, or maybe an updraft and you're all set.
because we don't have wings.
gravity
No.
we cant
no you really cant sorry
No humans are not able to live on Saturn. There is a high concentration of Sulfur which is not able to be processed by human's lungs.
oxygen...we cant live without it
no they cant calcium is what keeps are bones strong
We cant live without technology because it powers our life support machines and helps us discover new things
Well the things that humans do need are water/food safety shelter that's all what we really need.
yes. no.
Because a man cant live without a woman the water cant exist with out the fir and everything has to depend on something else there isn't a logical explanation. That's just how the world is!
A long time ago, people did live without machines. But now, it would make things much harder to do so.
NO becuz u cant really live in the bottom of the ocean bcuz humans can not breath in water without choking and dying! so NO
i cant live without you
No.
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Yes humans can live with out heads if they are an zombie.
i cant live without u