HELP M what are the two samples of DNA that are needed in order to identify the DNA as belonging to a specific person

Which sequence correctly shows the path of carbon dioxide during repiration?

How does friction with the atmosphere affect the speed of an artificial satellite

Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils