Abiological or physical vehicle that carries an agent to a host represents a

The influenza virus cause the flu, but not other diseases. why?

Describe the response the kidneys have to dehydration and excessive water intake. what happens to the concentration of urine in each case ?

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