Choose the true statement.
a. continental crust is less dense than oceanic crust.
b. continental crust is more dense than oceanic crust.
c. continental crust and oceanic crust have the same density.

Which part of cellular respiration must occur before any of the other steps can occur

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

In which of the following relationships is one organism always benefited while the other organism is always harmed