3. What are your characteristics as a student doing the projects given by your teacher

Which identifies the main purpose of biological taxonomy?

What causes darkening of the skin as melanin production increases

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