Textbook Notes (378,338)
CA (167,126)
UTSC (19,207)
BIOA02H3 (153)
Chapter 52

Chapter 52

3 Pages
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Department
Biological Sciences
Course Code
BIOA02H3
Professor
Kamini Persaud

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Ecology is the scientific study of the rich and varied interactions between organisms
and their environment.
Communities are systems embracing all the organisms living together in the same
area
Ecosystems are systems embracing all organisms in an area plus their physical
environment
Biosphere is the system that embraces all regions of the planet where organisms
live.
Environment encompasses both abiotic factors (physical and chemical) and biotic
factors (living organisms)
The climate of a region is the average of the atmospheric conditions over the long
term and it varies due to solar energy
Solar energy depends on the angle that light hits the earth and amount of earths
atmosphere passed through.
Cooled air from the North and the South travel to the equator and meet at the
intertropical convergence zone.
In the tropics air is heated by the sun allowing it to rise and expand releasing
moisture and then as it is cooled it starts to rain.
At 30 degrees north and south latitudes cooled air descends, picks up moisture with
increasing pressure (Dry Deserts).
At 60 degrees north and south latitudes air rises (releases moisture) descends at the
poles (picking up moisture).
Since the earth spins faster at the equator air masses moving latitudinally are
deflected to the right in the Northern Hemisphere and to the left in the Southern
Hemisphere
The air masses moving toward the equator from the north and south become the
northeast and southeast trade winds. Air masses moving away from the equator
become westerly winds
Once air masses come in contact with a mountain, the air passes over the mountains
cooling and creating clouds that release moisture as rain or snow. On the other side
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Description
Ecology is the scientific study of the rich and varied interactions between organisms and their environment. Communities are systems embracing all the organisms living together in the same area Ecosystems are systems embracing all organisms in an area plus their physical environment Biosphere is the system that embraces all regions of the planet where organisms live. Environment encompasses both abiotic factors (physical and chemical) and biotic factors (living organisms) The climate of a region is the average of the atmospheric conditions over the long term and it varies due to solar energy Solar energy depends on the angle that light hits the earth and amount of earths atmosphere passed through. Cooled air from the North and the South travel to the equator and meet at the intertropical convergence zone. In the tropics air is heated by the sun allowing it
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