• Doubt in Darwin’s “survival of fittest”?

    Best answer: "I’ve learned that “fitness” here means how successful an individual is at reproducing." --That is correct. "Then does it mean worker ants (or other organisms) which are sterile have “zero” fitness?" --Yes, technically that's what it means, but to say that rather misses the point that... show more
    Best answer: "I’ve learned that “fitness” here means how successful an individual is at reproducing."

    --That is correct.

    "Then does it mean worker ants (or other organisms) which are sterile have “zero” fitness?"

    --Yes, technically that's what it means, but to say that rather misses the point that the fitness of the queen is really what is at issue.

    "If yes, then how they’re surviving?"

    --The worker caste survives because the queen keeps producing more of them.
    23 answers · Biology · 1 week ago
  • The quadratic x^2 - 4x - 21 can be written in the form (x+a)^2 +b Find the values of a and b?

    I tried googling it but I have no idea how to solve it. Could someone please answer it for me and explain to me how you got it? Thankyou
    I tried googling it but I have no idea how to solve it. Could someone please answer it for me and explain to me how you got it? Thankyou
    21 answers · Mathematics · 7 days ago
  • Is life limited to the Earth?

    Best answer: Reading all these answers by people who are happy to accept the "life in space" dogma without question and without the slightest trace of evidence gives valuable insight into how religions got started. All the evidence we have says that indeed life is limited to Earth. This is not likely to change, so... show more
    Best answer: Reading all these answers by people who are happy to accept the "life in space" dogma without question and without the slightest trace of evidence gives valuable insight into how religions got started.

    All the evidence we have says that indeed life is limited to Earth.

    This is not likely to change, so it would be a good idea to get used to it.

    Think of all the work that has gone into the momentous discovery that we are alone. Celebrate the fact.

    Cheers!
    38 answers · Biology · 7 days ago
  • Does the moon have water?

    Best answer: Yes, it does, in the form of ice. And in fact, it's quite a bit.
    Best answer: Yes, it does, in the form of ice. And in fact, it's quite a bit.
    21 answers · Astronomy & Space · 1 week ago
  • Is the "Lucy" skeletal finds a scientific hoax?

    Best answer: The fossil remains are real but the interpretation is questionable. Not so much a hoax as confirmation bias. Donald Johanson was looking for a "human ancestor" and he interpreted the fossil to fit. The conclusion of obligate bipedal-ism was always suspect and is now considered unlikely. "Lucy"... show more
    Best answer: The fossil remains are real but the interpretation is questionable. Not so much a hoax as confirmation bias. Donald Johanson was looking for a "human ancestor" and he interpreted the fossil to fit.

    The conclusion of obligate bipedal-ism was always suspect and is now considered unlikely. "Lucy" was probably an arboreal ape and there is little reason to think she was in the human ancestral tree.

    [edit]
    Australopith limb bones were highly suited to life in the trees, not the open savannah, as textbooks depict. Curved hand and foot bones, long arms and more indicate this.

    Evidence from CAT scans of the fossil skulls (which show the orientation of the organ of balance) indicates that they did not walk habitually upright in the human manner.

    Lucy’s kin have also been shown to have had a locking wrist mechanism typical of knuckle-walkers.

    Analysis of foot bones shows that while the australopithecines may have had posterior arches, their medial arches would have been absent.

    http://creation.com/lucy-walked-upright
    16 answers · Biology · 7 days ago
  • Billionaire engineers?

    Best answer: They design and market things people wan or need. Bill Gates created the Windows Operating System. Mark Zukerburg created Facebook. A degree has nothing to do with what a person is capable of doing. It just means they sat through endless hours of boring lectures from people who never cared if they listened or... show more
    Best answer: They design and market things people wan or need. Bill Gates created the Windows Operating System. Mark Zukerburg created Facebook. A degree has nothing to do with what a person is capable of doing. It just means they sat through endless hours of boring lectures from people who never cared if they listened or not. What you create and market doesn't even have to have any real value so long as you can convince enough people to buy it.
    19 answers · Engineering · 1 week ago
  • How long will it be until mankind colonizes Mars?

    Who'd wanna live there, anyway ?...There would be virtually no outdoor life whatsoever, due mostly to frigid temperatures...Damn, couldn't even go to the frickin ' beach !
    Who'd wanna live there, anyway ?...There would be virtually no outdoor life whatsoever, due mostly to frigid temperatures...Damn, couldn't even go to the frickin ' beach !
    15 answers · Astronomy & Space · 1 week ago
  • Is it possible to build a highway to the moon?

    I mean if we had the right tools and plenty of people to help build this, could cars one day travel from here to the moon on a large highway? It might be a good idea to put some rest stops along the way too, it would probably be a long trip.
    I mean if we had the right tools and plenty of people to help build this, could cars one day travel from here to the moon on a large highway? It might be a good idea to put some rest stops along the way too, it would probably be a long trip.
    28 answers · Astronomy & Space · 6 days ago
  • How much is 1/3 of 400?

    18 answers · Mathematics · 1 week ago
  • Increase £280 by 5 percent?

    17 answers · Mathematics · 7 days ago
  • How many feet in 1/4 mile?

    16 answers · Mathematics · 1 week ago
  • What is force?

    14 answers · Physics · 1 week ago