50 point value please answer as soon as possible Briefly explain how specific protein molecules change over many years resulting in evolution.

What is the importantence of the carbon and nitretan cycles in the environment

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

Which of the following typically characterizes a tropical rainforests