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3 Cards in this Set

  • Front
  • Back
4 Methods of Fishing
1.       Fish farming in a cage

2.       Trawler fishing- shrimp, flounder, and scallops- draggers. Disrupt/ destroy ocean floor habitats.

3.       Purse-seine fishing- tuna, mackerel, anchovy, and herring. Dolphin and turtles get caught in the nets and drown.

4.       Long line fishing- longlining- up to 80 miles long, hook and kill a large number of turtles, dolphins, and seabirds.

5.       Deep sea aquaculture cage
demographic transition model stages
pre-industrialization

1.       High birth and death rates

2.       Lower population size

d. early industrialization

1.       Birth rates remain high for cultural reasons

2.       Death rate begins to drop because of prenatal care and medicine.

3.       Population begins to rise.

e. full industrialization

1.       Birth rate decreases

2.       Death rate continues to decrease

3.       Population rises rapidly

f. stabilization

1.       Birth and death rates stabilize at lower levels

2.       Population begins to stabilize, but at a higher number

3.       After a while, the birth rate decreases more and the population begins to decrease
five tenants of natural selection
e
1. variation exists within a population.
2. populations reproduce more than is necessary to maintain the population.
3. excess reproduction results in competition between juveniles.
4. the “best fit” will live to be adults (selected).
5. the best fit will dominate the characteristics of the species if the