Ecology Assignment


1. Explain why any one species cannot live everywhere.
Any species cannot live everywhere because this would effect the natural balance. Also one species cannot adapt to all the different environments of our planet. For example a marine creature can only live underwater and cannot live on ground.
2. Explain how the activities of some species can lead to:
a) an increase
b) a decrease in the population size of another species.
Some species act as population controllers of other species. There must be a 'balance' between the two and this is important to a healthy landscape. The decrease in the population is caused by the food chain, for example when a tiger preys on a zebra the population ...

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in a certain area because it would take too much time. Instead of actually counting the number of individuals in an area they would compare it with other areas where they know the population of individuals. In this way they can roughly estimate the number of individuals in a certain area.

4. What might happen to a rabbit population in an area where there are no predators?
If there were a few rabbits in an area with no predators they would over-populate and cause serious damage to the ground. Since they are fast at reproducing there is nothing to control the population level as the predators do so they damage the eco-system and the land is unsuitable for any crops.

5. In which way does communication assist the survival of members of a society, give examples.
Communication is essential to the survival of a society. Ants and bees are the most social of all animals as they live in a complicated and well-built ranking system. In the society of ants, every ant works for ...

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plants and convert this energy in to chemical energy and is stored in it's cells. Then the herbivores take the plants as a food supply and the energy that is within the plant is then changed to another form of energy which is then passed onto the carnivores. Then the carnivores decompose the waste products and the plants absorb the energy from the waste material left by the carnivores.
A food chain is different because it is a representation of what animals eat and what the animals that they eat. If this chain is disturbed by mass hunting, it could destroy the chain, and it could drive all creatures that are a part of the chain extinct.

Food Web Food Chain
PLANKTON
...

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PAPER DETAILS
Added: 10/21/2004 12:27:18 AM
Category: Science & Nature
Type: Premium Paper
Words: 1414
Pages: 6

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