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  1. Riot09

    School Certificate Science MARATHON

    mitosis-is a process of cell division that creates body cells,which enables organisms to grow and repair tissue.Asexual repoduc... also occurs by mitosis.During mitosis chrom....(dna) make copies of themselves (dna replication) and each cell recieves the same no. and type of chromosones and...
  2. Riot09

    School Certificate Science MARATHON

    really water!!!,i dont we just pump water out of the atmosphere or make a car that runs on water then? the latter would be very hard.
  3. Riot09

    School Certificate Science MARATHON

    why does my signature change to my profile picture and then after i edit a post it changes to my current signature then after i leave and come back it changes to the profile picture again? and a dna molecule make up genes which make up chromosones that determine charecteristics such as...
  4. Riot09

    School Certificate Science MARATHON

    identify and give an example of a method to filter a mixture.
  5. Riot09

    School Certificate Science MARATHON

    iv'e seen a question like this before but ill give it a shot. carbon dioxide and the property that makes a greenhouse gas effecvtive is that it traps heat in.
  6. Riot09

    School Certificate Science MARATHON

    what is difference between current and voltage
  7. Riot09

    School Certificate Science MARATHON

    theres only like 1 question on astro-physics anyway.
  8. Riot09

    School Certificate Science MARATHON

    astrophysics 101 distance in space is measured in light years. black hole-is a body with an extremely high density,found in outer space.its gravity is so powerful not even light can escape it,hence black hole galaxy-is made up of millions of stars,gas and dust held together by...
  9. Riot09

    School Certificate Science MARATHON

    Inflation is a general term for models of the very early Universe which involve a short period of extremely rapid (exponential) expansion, blowing the size of what is now the observable Universe up from a region far smaller than a proton to about the size of a grapefruit (or even bigger) in a...
  10. Riot09

    School Certificate Science MARATHON

    the big bang a thoery relating to the origin of the universe,the big bang theory states that 13.7 billion years ago the univese exploded from a singularity (a point is space-time where there is infinite density) into energy and then started accelerating. possible fates. most likely heat...
  11. Riot09

    School Certificate Science MARATHON

    big crunch
  12. Riot09

    School Certificate Science MARATHON

    how you seem like a fine person,very bubbly.
  13. Riot09

    School Certificate Science MARATHON

    Explain why Lamarck's theory of evolution is wrong. lamarck baptise,proposed the theory of acuired charectiristics,which basically meant inheritence to a degree.he said that a giraffe got its long neck by continully stretching it when got food from the trees.however the theory is wrong...
  14. Riot09

    School Certificate Science MARATHON

    homeostasis-is the proces of keeping the internal body environment constant so that it will function effieciently.(pretty basic there are no examples in this one but i could off said when you work out the body gets hot so it sweats to cool down or something like that but in more detail)...
  15. Riot09

    School Certificate Science MARATHON

    ofcourse i told him what it was.
  16. Riot09

    School Certificate Science MARATHON

    sodium chloride ion=an atom with a charge poly means many in greek,hence polymers,polynomials etc,)polyatomic ion means a group of atoms with a charge, i like to provide "laymen" explanations.so no ones left out. 1.what is the formula for calculating the speed of a object and give an...
  17. Riot09

    School Certificate Science MARATHON

    (q.21) when cells reproduce,what does the transfered dna contain? a.genes b.chromosones c.nucleii d .proteins
  18. Riot09

    School Certificate Science MARATHON

    yeagh,thats good. how come you didn't ask a question after you answered.just make up one in the spot.
  19. Riot09

    School Certificate Science MARATHON

    Name 3 reasons for/against nuclear energy. for: 1.economically effiecient source of energy. 2.does not emit greehouse gases therefore does not contribute to climate change 3. against 1.nuclear waste is radioactive and takes milillions of years to decay and are harmful to all living...
  20. Riot09

    School Certificate Science MARATHON

    well this question was in my trail science examination and i did come first in the class.however i did write "a modern......." refering to one discovery i think the (1500-present) modern history definition of modern confused you guys i apoligize for this.what i meant was just identify a...
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