All mammalian teeth share a similar structure: 1) the enamel crown, formed by epithelial cells; 2) the dentin found underlying the enamel, formed by mesenchymal cells and containing a large collagen component; 3) the pulp, the organ generating/supplying the dentin-forming cells (odontoblasts), and also containing ..
Renewable sources of energy do not contribute to global warming. Use of these resources rather helps in mitigating the global warming. A few example of these are hydroelectric power, wind generated power, solar energy, geothermal energy, tidal energy, biomass energy etc.
Answer:
External factors include physical and chemical signals. Growth factors are proteins that stimulate cell division. – Most mammal cells form a single layer in a culture dish and stop dividing once they touch other cells. Two of the most important internal factors are kinases and cyclins.
1.) Unfavorable environmental conditions such as lack of nutrients or oxygen, extreme temperatures, lack of moisture and presence of toxic chemicals, which are not conducive for the growth of the microbe trigger the formation of a cyst.
2.) If you have a low RBC count, symptoms could include:
- fatigue.
- shortness of breath.
- dizziness, weakness, or lightheadedness, particularly when you change positions quickly.
- increased heart rate.
- headaches.
- pale skin.
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