5th+period+Unit+4+Reese+and+Thomas

__media type="custom" key="16392330"Ecology__
All living organisms are connected in some ways from food chains, symbiotic relationships, preditor-prey relationships, and competition. They also live in ecosystems classified by climate and animals that live there called biomes.

__Biomes__
There are seven biomes in the world; Taiga, Tempurate Decidous Forest, Desert, Tundra, Savanna, Tropical Rainforest, and Grasslands

1. Taiga The Taiga is a cold biome with long winters and snow that covers the ground. Animals that live here are moose, bear, wolves, and lynx. The trees are evergreen, and pine trees.

2. Temperate decidous forest The decidous forest is characterized by trees that lose their leaves in the fall. Rainfall is spread throughout the year. Some animals that live there include white tailed dear,raccoons, foxes, and squirrels. The trees are maple, oak, elm, and birch trees.

3. Desert This is a very hot biome in which it has less than 25 centimeters of rain. It commonly has lots of sand. Plants include cacti, and small shrubs. Animals that live have to be able to survive extreme tempuraters like owls, lizards, snakes, and jackrabbits.

4. Tundra This biome is a cold biome that does not support the growth of trees and does not get much rain. The Tundra covers only 1/5 of the Earths land. It has small shrubs, and grasses and the animals that live there are elk, snowshoe hares, and foxes.

5. Savanna This biome is a genarally warm boime with wet and dry seasons. It has scattered trees and bushes. Lots of hebivors live here like zebras, girrafes,, elephants, wildebeest. But some carnivors are lions, and cheetas

6. Tropical Rainforest This is a biome characterized by humid, warm tempuratures near the equator. It has over 100 species of animals per square mile. Some animals are parrots, snakes, frogs, monkeys, and lizards.

7. Temperate Grasslands This biome has no trees but feilds of grazing grass. Animals include Bison, small mice, and prarie dogs. media type="custom" key="15540328" media type="custom" key="15540434"media type="custom" key="15540488"

__Relationships Between Organisms__
There are 3 types of symbiotic relationships; Mutualism, Parisitism, and Commensalism.

where both animals benifit. || This is a relationship where one animal benifits and the other is not harmed or benifited. || This is a relationship where one animal is benifited and the host is harmed || sea aneonome. The fish gets protection and the aneonome gets food || Ex: A shark and Remora fish. The fish feeds off of food remains while not hurting or helping the shark || Ex: A mosquitoe and a human. The mosquitoe sucks blood and gets nutrients and harms the human. ||
 * Mutualism || Commensalism || Parisitism ||
 * This is a relationship
 * Ex: A Clownfish in a

Food Chains, Food Webs and Energy Pyramids
__Food chains__- These show the tansfer of energy and how it is lost. __Food Webs__- These are many food webs put together and show the transfer of energy and feeding relationships between organisms in an ecosystem. __Energy Pyramids__ - These are pyramids that show how energy is lost through producers, consumers and decomposers.



__Cycles__
__Water Cycle__ The water cycle goes through many stages and starts with evaporation and transporation. Then it goes through condensation, precipitation, ect... __Carbon Cycle__ The Carbon cycle goes through many stages aswell but in a different ways. One of the ways is through breathing. We breathe in oxygen and let out carbon dioxide which then goes to planes to soak up the carbon dioxide and lets out oxygen. The carbon levels in the atmosphere are increasing because of cars that let out toxic fumes. Also, Deforestation plays a role on it too. The less plants and trees we have, the less they are soaking up carbon dioxide. __Nitrogyn Cycle__ Nitrogyn is an important ingredient for DNA and is and is needed for protiens.Nitrogn goes into the ground by decaying animals and is obsorbed by plants. But plants cant use nitrogyn strait from the source so nitrogyn has to go through the process of nitrogyn fixation. Nitrogyn fixation is when bacteria in the ground "fix nitrogyn can be obsorbed by plants. Nitrogyn makes up 78% of Earths atmosphere and another way int can be fixed'' is through lightning =Bibliography=

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