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Chapter 29

BIOL 1010 Chapter 29: Topic 29.2

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Biological Sciences
BIOL 1010
Emily A.Mc Kinnon

o78P Bio 1010 depend on wind to disperse their pollen (sperm) and seeds. Wind storms create patchiness in forest by blowing down trees. Wind also influences the rate of water loss by plants. Wind also plays apart in evaporative cooling which directly affects the internal temperature control of animals (mostly mammals). - Other Disturbances – Disturbances (i.e., fires, hurricanes, tornadoes, volcanoes, drought, flood, grazing) can greatly impact biological communities and ecosystems. After a disturbance, the habitat begins to reemerge and is slowly re-structured. This process of disturbance and re-structuring is called succession and is a vital role in biological communities and ecosystems. 35.4: ORGANISMS ADAPT TO ABIOTIC AND BIOTIC FACTORS BY MEANS OF NATURAL SELECTION Darwin noticed that organisms in various regions are usually well adapted for living in specific conditions and he suggested that interactions between organisms and their environments (abiotic and biotic) led to evolutionary change through natural selection. By default, Darwin was an early ecologist. One of the fundamental goals of ecology is to explain the distribution of organisms The presence of a species has two possible explanations: the species may have evolved from ancestors living in that location, or it may have dispersed to that location and been able to survive once it arrived 3 types of adaptations seen in organisms; physiological, anatomical, and behavioral. These adaptive categories mostly are in the context of how individual organism survives in their environment’s abiotic conditions. If you lo
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