A pure substance has a constant composition and cannot be separated into simpler substances by physical means. There are two types of pure substances: elements and compounds. Elements: are pure substances made up of only l type of atom. Atoms of the same element are identical in properties.
Answer:
chyba się zniszczy
Explanation:
ponieważ sie film prześwietli
Answer:
Today, the average total production cost of “standard modulus” carbon fiber is in the range of $7-9 per pound.
A & C.
much debated nuclear power plants uses nuclear fission power stations, with uranium-235 as the source if fission. It is "non-renewable" according to the Energy Information Administration.
burning wood is also a non-renewable energy source
Objects float on water because it has surface tension.
