Facts and information about space and planets

15 ! come and answer! a(n) is the general term for an infectious disease that has spread across a city, region, or country.

The response is the basis for vaccination. primary secondary tertiary none of the above

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