the main types are: soprano and mezzo soprano
The 2 main types of timber are Softwoods and Hardwoods.
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If by poultry you mean chickens, there are hundreds of breeds. Here are some of the most common ones: -Rhode Island Red (eggs) -Barred Rock (eggs) -White Leghorn (eggs) -Buff Orpington (mostly eggs, but are large, and make good meat birds also) If You didn't mean just chickens, There are many kinds including -ducks -turkeys -chickens -peafowl -Guineafowl and many others, hope this helps.
Inner Core and Outer Core
The main types are endoskeletons and exoskeletons.
the first layer is the surface layer it is nice and warm and mixed with the waves. the next layer is the thermocline it is just warm not any thing special. the next is freezing cold i would not want to go there.
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1 - Fresh Litter 2 - Fermantation layer 3 - Humification layer 4 - Humus and mineral These are the 4 main
Two main types of satellites are: Communication(s) Remote Sensing
There are seven type of OSI reference model:-Layer 7: The application layer Layer 6: The presentation layer Layer 5: The session layer Layer 4: The transport layer Layer 3: The network layerLayer 2: The data-link layer Layer 1: The physical layer
There are 3 types: Pleura, Perioneum, and Pericardium