GGR100H1 Lecture 5: GGR 336 - Lecture 5 Notes.docx

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ochregoldfish812

9 Apr 2012

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Lecture 5: north migration southern blacks moved to the north. Blacks in the north were not that friendly to south rural blacks. Accent from southern blacks are making problems worse in the north. Systems of white supremacy still existed in the north the bombing of black houses when they entered white neighbourhoods. Riots after ww1: whites came back from the war and wanted their jobs back which were being occupied by the black population chicago race riots 1919. The black belt were poor neighbourhoods which were crowded whites wanted to keep the. It is a place where people are limited to live there . It is by force; laws are used to systematically segregate the population by race. 3 factors create the ghetto: housing, labor, and racism. Housing: certain races can buy certain houses; blacks were forced to live in overcrowded, old, high priced neighbourhoods. Chicago real estate board and home owners association.

A right triangle has legs ofknown lengths 2L and h. Find thelength of the line segment x whichis parallel to side h. Explainyour reasoning. Image in weblinkbelow:

http://paer.rutgers.edu/194/Downloads/194LAB07.pdfRY4bB71082bfFuqzISDrWGDOWfNgGl208qJNQTAhpzWjb_ahDlhGHPLz19S1Eq95&q=cache%3AnpyQu9LlzykJ%3Apaer.rutgers.edu%2F194%2FDownloads%2F194LAB07.pdf%20this%20geometry%20task%20may%20be%20helpful%20for%20devising%20a%20mathematical%20procedure%20for%20the%20next%20lab.%20A%20right%20triangle&docid=5c8a26db354186a31ce6383

POSTSCRIPT: EFFECTS OFASSUMPTIONS

The marbled murrelet is asmall bird that lives in the PacificNorthwest where old-growthforests are close to the sea. It nests inthe forests and feedsoffshore. It is now highly endangeredthroughout its range, whichextends from Northern California toAlaska.

These birds are extremelyvulnerable to loss of their habitat,because they nest exclusivelyin the same old-growth coniferoustrees that are prime targets forlogging. Considerable efforts havebeen made to protect the speciesby restricting timber operations inthe areas in which they areknown to nest. Scientists predicted thatthe population should growback. However until recently naturalistswere puzzledand

dismayed because thepopulation of marbled murrelets did notseem to be recovering oreven stabilizing.

A recent study suggests thereason why this testing experimentin conservation did not confirmthe prediction. The scientistsoverlooked an important assumption:murrelets can also be threatenedby man's activity at sea.Overfishing has severely reduced thepopulation of small,energy-rich fish that murrelets rely upon formost of theircalories.

Climate change of uncertainorigin may have also disrupted thefood chain, and El Nino currentsmay have changed the distributionof the phytoplankton that formsthe base of all marine life.

Further efforts to preservethe marbled murrelet must be basedon accurate assumptions aboutthe origin of their difficulties.

Could naturalists have betterconsidered their originalassumptions years ago? What would yousay?

GGR100H1 Lecture 5: GGR 336 - Lecture 5 Notes.docx

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