Deserts Notes - water loss Ridges on cactuses create...

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Deserts- occur where evaporation exceeds rainfall A) California definition- if you have less than 10 inches of rainfall per year B) Wide temperature range (40-50 degrees Fahrenheit between day and night) sometimes upwards of 100 degrees difference. Requires much adaptation by plants C) Shrubs & trees (only in places with underground water). D) Cactuses and cactoids are different. Euphorbias? E) Mexico has 300 different types of cactuses and in the world there are about 2000 species of cactuses. F) Very small leaves to reduce water evaporation G) Cactus spines are another adaptation. They are leaves that have no
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Unformatted text preview: water loss. Ridges on cactuses: create shadows to keep plant from overheating. H) High diversity of animals I) Animals that depend on plant seeds: ants, birds, and mice J) Certain kinds of mammals go underground during day when it is hot and then come out at night. Other mammals estivate, which is common in squirrels. GO underground during summertime and basically rest. Stay underground all summer and only come up when it is no loner hot. K) Poor organic content matter L) Mojave desert takes about a thousand years to rebuild soil from disturbance by vehicles...
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