Friday, October 24, 2014

Population Dynamics Summary Questions

Population Dynamics Summary Questions

Using an example, describe why population could not increase forever.

An example of why population cannot increase forever is, in the African plains buffalo are wild and if there were no lions the buffalo would overpopulate the plains and they would not all be able to survive or they would make other creatures die or have to move out.
But since there are lions in the plains (The buffalo's predator) they kill and eat the buffalo and their offspring, it is a sad truth but it is so all other creatures can survive in a way, including the buffalo.

What are 2 factors that determine whether a population increases or decreases. (Use each factor in a one sentence example.

Two factors that determine whether a population increases or decreases are Carrying capacity and prey and predators.
Carrying capacity is a factor because its determines how many animals in a species can be supported in an ecosystem. for example fish in a pond, you could fit hundreds, maybe thousands of fish in a pond but all of them wouldn't be supported by the ecosystem. to be supported they need to be fed and be able to have offspring to be supported.
Another factor is predator and prey, all animals either have prey or predators except humans, they either eat or get eaten, that determines whether any increases or decreases happen in the population.

Give me a reason why the human population of earth has continued to increase so much for the past hundred years?

One reason of why the population of earth has increased so much is because we have become more advanced in medicine and technology. We no longer live in fear of animals everyday or need to build shelter to survive. When we get sick we go to the doctor for medicine, when animals get sick they lie in the forest and die. we have all these things to keep us alive while we are making a world where everything will die except us.

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