BIO120H1 Lecture Notes - Lecture 13: Adaptation, Gliding Flight, Horse Latitudes
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BIO120H1 Full Course Notes
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Nothing in biology makes sense except in the light of ecology: adaptive evolution is the result of interactions with individual organisms trying to make success in a challenging environment. Species have ranges of tolerances along environmental gradients: **so, animals tend to follow plant distributions because they have certain types of vegetation that they do well in. Differential heating d(cid:396)ives the ea(cid:396)th"s atmospheric heat engine. Ea(cid:396)th"s axis of (cid:396)otation is set at an angle. N-hemisphere is farther from the sun than is the s-hemisphere. N-hemisphere winter is colder because the same number of photons that are coming from the sun is spread across a much larger landmass. Atmospheric circulation hadley cells make equatorial regions rainy: these cells describe particular circulation loops that are driven by the heating of. Intense sunlight focussed on the equator heats up that part of the world differentially: heated air rises and becomes more buoyant. Other atmospheric cells interlock like a gear train.
