• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Natural Selection

Extracts from this document...


Natural Selection 1. The number of prey decreases whilst the number of predators remains constant however, there might be an increase in the population of the fittest predator even though the total number would not change. In addition to that each predator has different capabilities and those capabilities allow them to survive much better than the other predators, for example the hands were the fittest because they were equipped with the best tools for gathering food, whilst the clothes pegs were the least effective. 2. Predators are predators because they are physically more fit or advantaged than those on who they prey. The predator's phenotypes allow them to survive much better than the prey because they can overpower the prey. However the preys also have their own phenotypic capabilities which enable them to survive by feeding on other organisms, where they become predators momentarily. 3. The variety of predators creates very tough competition amongst the predators in similar regions, and thus the theory of survival of the fittest, the most efficient predator at 'hunting' has a better chance of survival. ...read more.


so with an increasing number of very efficient predators and a decreasing number of prey, some predators and eventually all prey will b extinct. 5. There were no environmental factors that could have affected the results, because all the predators were free to hunt wherever they wanted although there was unequal prey in some places the predators hunted, they were still free to go to another place. Except for the fact that the prey were easily visible in most places 6. It might have been harder to see some species of prey, such as the black beans and the pinto beans had they been placed against a black background whereas it would have been fairly easier to see the white beans. Thus the white beans might have become extinct mush sooner than the other two types of beans. 7. This activity is a good example of how two populations might interact because it contains very similar factors as those of reality, for example although the pinto beans were ...read more.


10. Experts might argue this because in some cases using pesticides and antibiotics will kill off one species of the family of bacteria or pest, in which case the only species left would be the ones which are immune to the pesticide or antibiotic. This would then later cause problems if the pest or bacteria has infected an organism. 11. The lack of genetic variation is dangerous to the survival of a population because if the population were to be infected with a virus or bacteria, that population would become extinct and then there would be no more of that organism, whereas if there was a variation in the population, one of the species might be immune to the virus in which case it would survive and thus would not cause a problem as that of Ireland. Christopher Chileshe May 2, 2007 Ms. Shaw IB Standard Level Biology 1 ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Living Things in their Environment section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Living Things in their Environment essays

  1. Extended Experimental Investigation - Natural Antibiotics

    The solution was further diluted with 50% of the original garlic/lemon/lime mixture combined with 50% water. The reason for the testing of these dilutions was to ensure that consideration was made on the costs of production of the product when deciding on the final formula.

  2. Monitoring an Organism

    We need to keep their natural behaviours same in case if they have been put back in their natural habitat. This is a plan which I have made before I went to the Twycross zoo: Planning: 1. I will monitor the primates at the Twycross Zoo.

  1. Describe the differences between natural ecosystems and ...

    biomass is exported as crops, fodder crops or forage, and usually only a small fraction of the biomass on farms may be left to seed.

  2. Investigating the effect of four antibiotic agents on gram positive and gram negative bacteria.

    The active ingredient, which is responsible for garlic's anti-viral and anti-fungal properties, is allicin. This is also the ingredient that is responsible for the smell. A peeled garlic clove has little smell but as soon as it's crushed, the aroma is overwhelming.

  1. Patterns of Feeding mosquitos.

    The mosquito phase of the malaria parasite's life cycle is normally completed in 10 to 14 days. This development process occurs more slowly in areas with cooler temperatures. Sporozoite development of Plasmodium falciparum is slowed particularly by low temperatures, preventing transmission of this parasite in temperate climates except during summer.

  2. Evolution, Natural selection and Darwinism

    Also the geologists started looking at the fossil records, palaeontology, which was largely developed by a French anatomist Georges Cuvier (1769-1832). He noted that the deeper (older) the stratum, the more dissimilar the flora (flower life) and fauna (animal life)

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work