The 2 main types of timber are Softwoods and Hardwoods.
The two main types of rocket engines are Solid fuel rocket engines and Liquid fuel rocket engines.
The oldest of the three pyramids, the pyramid of Khufu, was built around 2580 BCE. The other two, the pyramids of Khafre and Menkaure, followed soon after.
ROM (Read only Memory) and RAM (Random access memory). However, there are loads more types of computer memory than these two.
The 3 main types of organic compounds used in society are alkanes, alkenes and alkynes
You can't tell without seeing the pyramids.
limestone and granite
what are the two main types of environment
there are two main types the marine and freshwater
I believe that they are three main pyramids in Giza.
The two main types of economy are Command and Traditional.
The two main types of friction are kinetic and static.
the two main types of communications are emailing and socialising
The two main types of friction are kinetic and static.
what are the two main types of environment
there are step pyramids, bent pyramids, normal pyramids and more
There are 2 different types of pyramids: the step pyramid, and the true pyramid.