Proteins are the building blocks of many structures,
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pemis
Steel
20
1500
Building blocks are often made out of many different things. Building blocks are often made of high quality materials such as plastic or different kinds of wood.
He was 12 building blocks old, or 35 in dog-building blocks
the building blocks of life are cells the building blocks of matter are atoms
animo acids
56
What sort of blocks? Childrens' building blocks? If so, how big is each block?
Atoms are the building blocks of molecules.