At Low Densities and in the Absence of Any Competitors,the

question 96

Essay

At low densities and in the absence of any competitors,the population of a strain of the flour beetle Tribolium castaneum grows at a per capita rate of 0.3 per week.Under certain lab conditions,the presence of each 100 individuals of the same species reduces that rate by 0.02.The addition of a competitor,Tribolium freemani,reduces the population growth of T.castaneum by 0.04 for every 100 T.freemani individuals.If there are 800 T.castaneum and 400 T.freemani individuals,the per capita growth rate of the T.castaneum population is _______.

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Definitions:

Central Planning

A system of economy in which all choices about the creation and allocation of goods and services are made by the government or a central body.

Capitalist Form

A socio-economic system characterized by private ownership of capital goods, investments determined by private decision, and prices, production, and the distribution of goods determined mainly by competition in a free market.

Mixed Economy

An economic system combining private and public enterprise.

Private Sector

Refers to the part of the economy that is run by individuals and companies for profit and is not state controlled.