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Unicellular-(single cell)
Multi-cellular- (many cells)
* 5 levels of organization ranging from simplest to most complex
1.Cells (blood cells, nerve cell, bone cell)
2. Tissues( blood, nerves, bones)
3. Organs( heart, brain, skin)
4. Organ System( circulatory, endocrine, immune, nervous, digestive, excretory, muscular, reproductive, respiratory, skeletal, integument,
4. Organism (bacteria, amoeba, mushroom, bacteria, human
If you can see it w/ the naked eye, then it is multi-cellular
Homeostasis= Equilibrium= balance
Homeostasis helps your body keep its internal temperature constant. It works like a thermostat
The endocrine system regulate body temperature. It sends messages threw through the nervous system.
body cold ---> nervous system ---> muscular system ---> causing goosebumps ---> generate thermal energy
---> causing body temperature to raise(endocrine system, nervous system, muscle system) works together
Homeostasis
* Temperature
* Nutrient Levels
* Oxygen
* Fluid levels
*pH
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