• Did Darwin disprove the myth of extinction?

    Species don't go extinct, they evolve.
    Species don't go extinct, they evolve.
    16 answers · Biology · 13 hours ago
  • Is it possible that our galaxy is at the center of the Universe?

    Best answer: The Hubble Telescope has proved it isn't.
    Best answer: The Hubble Telescope has proved it isn't.
    25 answers · Astronomy & Space · 2 days ago
  • Is marijuana vegan?

    13 answers · Botany · 15 hours ago
  • (4-x)/(x-5) > 1/(1-x)?

    Best answer: (4 - x)/(x - 5) > 1/(1 - x) (4 - x)(1 - x) > x - 5 4 - 5x + x^2 > x - 5 x^2 - 6x + 9 > 0 (x - 3)^2 > 0 ---> x =/= 3. Not done yet; x = 1 (excluded value) x = 4 (a zero on the left side), and x = 5 (excluded value) must be used for interval bounds. If x < 1, you have plus/minus > 1/plus... show more
    Best answer: (4 - x)/(x - 5) > 1/(1 - x)

    (4 - x)(1 - x) > x - 5

    4 - 5x + x^2 > x - 5

    x^2 - 6x + 9 > 0

    (x - 3)^2 > 0 ---> x =/= 3.

    Not done yet; x = 1 (excluded value) x = 4 (a zero on the left side), and x = 5 (excluded value) must be used for interval bounds.

    If x < 1, you have plus/minus > 1/plus ---> minus > plus. Doesn't work.

    If 1 < x < 3, you have plus/minus > 1/minus ---> minus > minus. Doable.

    If 3 < x < 4, the same happens as in the previous case (minus > minus). Doable.

    If 4 < x < 5, you have minus/minus > 1/minus ---> plus > minus. This works.

    If x > 5, you have minus/plus > 1/minus ---> minus > minus. But this fails because you have a number increasing toward -1 that is greater than a negative unit fraction -- a false statement because the negative unit fraction is closer to 0.

    Solution interval union should be (1, 3) U (3, 5); 1 < x < 3 or 3 < x < 5 should satisfy the inequality.
    7 answers · Mathematics · 1 day ago
  • Did satellites help us discover any uncharted land and make all of Earth charted?

    Best answer: Yes, there are barrier islands discovered by satellites. Earth has been thoroughly mapped by satellite, including the ocean floor by SeaSat satellites. the problem is the resolution of the SeaSat images is not very good. "...657 new islands discovered by satellite imagery. Of... show more
    Best answer: Yes, there are barrier islands discovered by satellites. Earth has been thoroughly mapped by satellite, including the ocean floor by SeaSat satellites. the problem is the resolution of the SeaSat images is not very good.

    "...657 new islands discovered by satellite imagery. Of course, they are immediately declared threatened by sea level rise
    Anthony Watts / April 21, 2011

    Chandeleur Islands - Image: Univ of Montana

    From LiveScience.com

    Here’s something you don’t see every day — hundreds of new islands have been discovered around the world.

    The Earth has 657 more barrier islands than previously thought, according to a new global survey by researchers from Duke University and Meredith College in Raleigh, N.C.

    The researchers identified a total of 2,149 barrier islands worldwide using satellite images, topographical maps and navigational charts. The new total is significantly higher than the 1,492 islands identified in a 2001 survey conducted without the aid of publicly available satellite imagery...."

    https://www.livescience.com/62784-co2-suck-climate-gasoline-air.html?utm_source=notification

    Notice that article is 7 YEARS OLD.

    The truthful answer to your questions is YES.
    6 answers · Astronomy & Space · 1 day ago
  • Are ufo;s for real?

    12 answers · Astronomy & Space · 13 hours ago
  • How many yards = .3 miles?

    11 answers · Mathematics · 5 hours ago
  • Does our sun have a name?

    Best answer: The official name, in English, of our star is Sun (with a capital S). The word "sun" (small s) is a simile: a word used to describe things that are similar. Other stars that have planets are often called suns (small s), but in astronomy, we try to avoid the simile unless it is quite clear. Our Sun's... show more
    Best answer: The official name, in English, of our star is Sun (with a capital S). The word "sun" (small s) is a simile: a word used to describe things that are similar. Other stars that have planets are often called suns (small s), but in astronomy, we try to avoid the simile unless it is quite clear.
    Our Sun's name, in Latin, is Sol. That is why we have the adjective solar, in English.
    The Solar system (the system of planets around "Sol") is OUR planetary system. Other planetary planets (around other stars) are not solar systems (they are planetary systems or systems of planets).
    The name of our Sun in Greek is Helios. That is why we talk of the heliographic system (the system describing the Sun as the centre).

    The official name, in English, for our natural satellite is Moon (capital M). The word moon (small m) can be used as a simile for other objects that are similar. For example, the moons of Jupiter. However, in astronomy, the official word for these things is "satellite".
    Moon's name in Latin is Luna; we have the adjective lunar, in English.

    Our Galaxy's official name in English is (was) Galaxy - with a capital G. Other galaxies are given names that depend on the direction in which we see them from Earth (the Andromeda galaxy appears to be in the constellation called Andromeda), or on the shape of the galaxy (the Sombrero galaxy looks like... a sombrero), or the number it has in some official list (for example NGC-224, for the 224th galaxy listed in the New General Catalogue).
    The Milky Way is a band of stars that makes up a part of our Galaxy. Calling our Galaxy the Milky Way galaxy (with or without a big G) is not wrong, but it is redundant (the word galaxy comes from a Greek word meaning "milky").

    The problems started when an American astronomy magazine asked authors to use lower-case letters for the proper names of the Sun and the Moon, giving people the false impression that these things had no names.
    13 answers · Astronomy & Space · 1 day ago
  • How many ounces in a pound?

    21 answers · Mathematics · 2 days ago
  • Is evolution a tested verified settled science?

    There many unanswered issues in regards to evolution theory. Some but not all include, "Lack of a viable mechanism for producing high levels of complex and specified information. Related to this are problems with the Darwinian mechanism producing irreducibly complex features, and the problems of non-functional... show more
    There many unanswered issues in regards to evolution theory. Some but not all include, "Lack of a viable mechanism for producing high levels of complex and specified information. Related to this are problems with the Darwinian mechanism producing irreducibly complex features, and the problems of non-functional or deleterious intermediate stages.The failure of the fossil record to provide support for Darwinian evolution.The failure of molecular biology to provide evidence for a grand “tree of life.” Natural selection is an extremely inefficient method of spreading traits in populations unless a trait has an extremely high selection coefficient; The problem that convergent evolution appears rampant — at both the genetic and morphological levels, even though under Darwinian theory this is highly unlikely. The failure of chemistry to explain the origin of the genetic code.The failure of developmental biology to explain why vertebrate embryos diverge from the beginning of development. The failure of neo-Darwinian evolution to explain the bio-geographical distribution of many species.A long history of inaccurate predictions inspired by neo-Darwinism regarding vestigial organs or so-called “junk” DNA.Humans show many behavioral and cognitive traits and abilities that offer no apparent survival advantage (e.g. music, art, religion, ability to ponder the nature of the universe)."
    17 answers · Biology · 2 days ago
  • Is 1998 late 90s?

    29 answers · Mathematics · 4 days ago
  • Why do people say that we are so much smarter than the rest of tha animal kingdom?

    We are the only animals that kill eachother for fun and can cause mass destruction to the world we live in so how "smart" are we really? I am 16.
    We are the only animals that kill eachother for fun and can cause mass destruction to the world we live in so how "smart" are we really? I am 16.
    22 answers · Zoology · 3 days ago
  • What kind of beetle is this?

    What kind of beetle is this?

    (picture)
    (picture)
    9 answers · Zoology · 7 hours ago
  • A 16-oz jar of peanut butter in the shape of a right circular cylinder is 5in high and 3in in diameter and sells for $1.60.?

    In the same store, a 26-oz jar of the same brand is 5&1/2in high and 3&1/4in in diameter. If the cost is directly proportional to volume, what should the price of the larger jar be? If the cost is directly proportional to weight, what should the price of the larger jar be?
    In the same store, a 26-oz jar of the same brand is 5&1/2in high and 3&1/4in in diameter. If the cost is directly proportional to volume, what should the price of the larger jar be? If the cost is directly proportional to weight, what should the price of the larger jar be?
    5 answers · Mathematics · 2 days ago
  • Can i take a anxiety pill before an oral presentation exam ?

    or half of the pill ? could it be potentially dangerous and would i **** up my exam more than if i was severly anxious ? i could go to the doctor but i don' have money/time right now. Please it's important.
    or half of the pill ? could it be potentially dangerous and would i **** up my exam more than if i was severly anxious ? i could go to the doctor but i don' have money/time right now. Please it's important.
    8 answers · Medicine · 12 hours ago
  • In a class of 50 students, 38 use desktop computers, 16 use laptops. What is the maximum number of students who use both?

    Best answer: In the extreme case, all 16 that use laptops could be completely inside the set of students who use desktop computers. In other words, the maximum who use both is 16. As for the minimum, we can't have the two sets being disjoint (no overlap) because 16 + 38 = 54. That means there has to be an overlap of at... show more
    Best answer: In the extreme case, all 16 that use laptops could be completely inside the set of students who use desktop computers. In other words, the maximum who use both is 16.

    As for the minimum, we can't have the two sets being disjoint (no overlap) because 16 + 38 = 54. That means there has to be an overlap of at least 4 students that use both a laptop and a desktop computer.

    Answer:
    Minimum of 4 students
    Maximum of 16 students

    Update:

    If it helps, imagine you have 16 labels that say "laptop" and 38 labels that say "desktop" and you have 50 students.

    You could give a "laptop" and a "desktop" label to the same 16 students. That's the maximum you could have --> 16 maximum.
    (The remaining 22 "desktop" labels would go to any of the remaining students)
    16 (both), 22 (just desktop), 12 (no computer)

    And for the other way, you could give all the "laptop" labels to 16 students which leaves 34 students. You could give them 34 of the "desktop" labels but you'd have to give 4 "desktop" labels to those students that already have a "laptop" label. That's the minimum you could have with both --> 4 minimum
    4 (both), 34 (just desktop), 12 (just laptop)
    8 answers · Mathematics · 3 days ago