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18 Cards in this Set

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many organisms that live in an environment with unstable resources produce a large # of offspring

low reproductive rate - live in environment with predictable resources
R vs. K selection
Explain Carrying Capacity

Explain Carrying Capacity and R selection

Explain Carrying Capacity and K selection
maximum # of individuals of a given species that a given area can support for a prolonged period

In r-selection, the low survivability of offspring because of unpredictable environmental conditions forces the parents to produce more young than they can support. # offspring > carrying capacity

In K-selection, reproductive strategy is to produce only the # of offspring that can survive with in the carrying capacity of environment
Explain the significance of agriculture and population growth
development of an agricultured society at about 10,000 years ago was largely responsible for expanding the human population
Explain the causes of overpopulation
exceeding carrying capacity, size of population exceeding ecological resources, unsustainable use and depiction of resources, lage increase in birth and survival rates
What are the consequences of overpopulation
famine, sanitation breakdown, increased crime rate, war, illiteracy
Discuss India, Japan, China, and the US fertility rate and how population has grown in those countries ( and consequences )
India has a high infant mortality rate, They use r-selection and more babies are born than can be supported. Japan's fertility rate is 1.3 children per women which is less than replacement. U.S. fertility is lower that replacement, but U.S. allows 1 million immigrants per year. China has 1 child per family policy.
Within 100 years the population of Japan will decline by _____.
1/2
Within 10o years the population of Russia will decline by _____.
20%
The environmental influences population size by affecting the _____ _____ used by the organisms.
reproductive strategy
The production of a large number of offspring by organisms in an environment with unstable resources is called _____.
r-selection
_____ is the reproductive strategy that is characterized by a low reproductive rate.
k-selection
The growth in the world human population follows a path commonly observed in all living organisms called _____ _____.
exponential growth
In 1979 the Chinese government introduced the ___ _____ per family policy with the slogan "Late, Long, and Few."
one child
Unmarried youth in Japan are known as _____ _____.
parasite singles
By 2050 the African population will be _____ the size of Europe's
triple
____ is the number 1 cause of death in sub-saharan Africa.
Aids
When faced with high infant mortality rate a population will use the _____ reproductive strategy
r-selection
The population of the world is predicted to be _____ in 2050
9 billion