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    Section16 Section16 Presentation Transcript

    • Section 16 Biology I Factoids
    • Factoid 279
      • Section 16
      • Land biomes are called terrestrial biomes.
    • Factoid 280
      • Tundra (next to the poles – North Canada)
      • Climate – Cold winters, short cool summers. Ground is permanently frozen.
      • Dominant Plants – Mosses, small grasses
      • Dominant Animals – Small rodents, caribou, some birds – no reptiles.
    • Factoid 281
      • Coniferous Forest (Northern US)
      • Climate – Cold winters, mild summers. Lots of precipitation.
      • Dominant Plants – Cone bearing plants
      • Dominant Animals – bears, deer, elk, bobcats.
    • Factoid 282
      • Deciduous Forest (Mississippi!!!)
      • Climate – Cool winters, warm summers.
      • Dominant Plants – Deciduous plants (this means they lose their leaves in the fall)
      • Dominant Animals – Animals you are familiar with in Mississippi – Deer, bears, skunk, turkeys, raccoons.
    • Factoid 283
      • Grassland (The mid-west)
      • Climate – Fertile soils, moderate precipitation, cold winders and hot summers. Fires are common.
      • Dominant Plants – grasses, low rain prevents large trees.
      • Dominant Animals – prairie dogs, buffalo, large herbivores.
    • Factoid 284
      • Chaparral – (Pacific coast)
      • Climate – hot, dry summers; mild, cool, rainy winters
      • Dominant Plants – woody shrubs
      • Dominant Animals – insects, lizards, snakes, chipmunks, mice, rabbits, fox, coyotes, mountain lion, owls, birds
    • Factoid 285
      • Desert (Mexico, North Africa, SW US)
      • Climate – Hot days and cold nights
      • Dominant Plants – cacti and succulents
      • Dominant Animals – bobcats, mountain lions, owls, hawks, antelopes, sheep, rats, lizards, rattlesnakes
    • Factoid 286
      • Savanna (Africa)
      • Climate – Warm with seasonal rainfall
      • Dominant Plants – grasses, small clusters of trees and shrubs
      • Dominant Animals – elephants, rhinos, antelope, zebra, giraffe, insects, ostrich, eagles, lions, leopards.
    • Factoid 287
      • Tropical Rainforest (Near equator, South America)
      • Climate – year-around high temperatures; high rainfall
      • Dominant Plants – broad leaf evergreen trees, ferns, large variety. LOTS of diversity.
      • Dominant Animals – all types of animals in a large variety; most biodiversity.
    • Factoid 288
      • Rivers and steams
      • Freshwater; flowing water; may be fast or slow moving
      • Colder and cleaner than standing water.
    • Factoid 289
      • Lakes and Ponds
      • Freshwater; standing water;
      • Warmer and more turbid
    • Factoid 290
      • Aphotic zone
      • Deep in the water where it is dark and no sunlight reaches.
    • Factoid 291
      • Photic zone
      • Area of water where light does penetrate.
      • Lots of photosynthetic organism live here which attract other animals to this area.
    • Factoid 292
      • Costal ocean
      • Saltwater; area from the outer continental shelf to the low-tide mark
    • Factoid 293
      • Intertidal zone
      • Saltwater; area between low tide and high tide; subject to tidal changes
      • Organisms live here that can stand to be out of the water.
    • Factoid 294
      • Coral Reefs
      • Made of calcium carbonate formed by corals (cnidarians); warm saltwater; usually no deeper than 40 meters.
    • Factoid 295
      • Estuaries
      • Where freshwater rivers and streams merge with the oceans; varying salt concentrations
      • Brackish water
    • Factoid 296
      • A predator hunts, kills, and eats prey. Prey is what the predator eats.
    • Factoid 297
      • Competition results from two or more organisms trying to use the same resource.
      • Can include food, water, shelter, or even a a mate.
    • Factoid 298
      • Symbiosis is a relationship between organisms.
    • Factoid 299
      • Mutualism is a type of symbiotic relationship in which both organisms benefit from living together.
    • Factoid 300
      • Commensalism is a type of symbiosis in which one organism gets the benefit of the relationship and the other organism is neither benefited or harmed.
    • Factoid 301
      • Parasitism is a type of symbiosis in which one organism gets the benefit and the other member gets harmed.
      • Parasites weaken, but do not kill the host.
    • Factoid 302
      • The carrying capacity refers to the largest number of organisms of a species that can be supported by the environment.
    • Factoid 303
      • Population growth is limited by factors such as the birth/death rate, the number of organisms entering and leaving the population, and the amount of available resources. These are called limited factors.
    • Factoid 304
      • Ecological succession is a series of predictable changes in an ecosystem.
    • Factoid 305
      • Primary succession starts on the earth’s surface where there is no soil. Occurs after a major disturbance like a volcano eruption and all the soil is removed.
    • Factoid 306
      • Secondary succession occurs when plants have been removed leaving the soil. Secondary succession is the replacement of plant species in an area that has been disturbed.
    • Factoid 307
      • Typically in Mississippi succession happens in this order:
      • Grasses  weeds and wild flowers  shrubs  pine trees  hard wood trees
    • Factoid 308
      • When runoff from fields washes fertilizer into pond, algae can grow out of control. This is called algal bloom.
    • Factoid 309
      • When a poison is not excreted from the tissues of an organism, but build up in them instead, it is known as biological magnification.
    • Factoid 310
      • A natural resources can be classified as renewable or non-renewable resources.
      • Non-renewable resources (coal, oil, natural gas) take millions of years to form.
      • Renewable resources (water, trees) can be replaced quickly.
    • Factoid 311
      • If something is biodegradable, then it can be broken down quickly by microorganisms.
    • Factoid 312
      • Urban development refers to the destruction of natural areas for human use such as shopping malls and houses.
    • Factoid 313
      • The ozone layer protects the earth’s surface from harmful ultraviolet (UV) radiation. Some chemicals made used by humans can destroy ozone. Decreased ozone could be a cause for global warming.
    • Factoid 314
      • Global warming refers to the rise of global temperatures. Increased levels of carbon dioxide can increase global temperatures.