Human Ecology Flashcards
When did the industrial revolution begin?
the mid-eighteenth century
What has caused the earths population to exceed 7 billion?
advances in agriculture and industry
How many people are added to the population of earth everyday?
228,000
When agriculture first started the planet could support 5 million people with a growth rate of ___
0.05%
list the historical population growth
a. 1st billion = 1800
b. 2nd billion =1930
c. 3rd billion =1959
d. 4th billion =1974
e. 5th billion =1987
f. 6th billion =1999
e. 7th billion =2011
What year are we expected to reach 8 billion?
2030
What year are we expected to reach 9 billion?
2050
give cases where species decline is a direct result of human impacts on habitat
a. fragmentation
b. conversion of land for agriculture
c. industry and housing
d. depletion or pollution of resources such as food or water
Fishing, hunting or gathering a species beyond the rate that a species can recover is called….
overkill
List 3 animals that are in rapid decline in India because of poaching
bengal tiger, Asiatic lion, and leopard
What tree in Hawaii has been over harvested?
sandalwood tree
What is the primary reason why habitats are destroyed?
to expand agricultural land to meet the dietary needs of a growing population
The problematical plant invaders of the American west is what
cheat grass
What occurs more often where cheat grass is?
fires
In the Great Lakes region ships have introduced what invasive species?
zebra mussels
What is air pollution?
emission of harmful gases or particles
What is water pollution?
dumping of waste materials, chemicals or microorganisms into a body of water
What is land pollution?
improper storage and leaching of domestic or industrial waste materials
What can pollutants lead to?
respiratory, heart and lung disease
Sustainable stewardship of planetary resources requires humans to do not do what?
not use resources at a faster rate then they can be replaced
What has become the greatest ecological challenge of our time?
global climate change
How many years ago did humans develop agriculture?
12,000
