How do animals reproduce asexually?

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

Isotopes of the same element have differ in their

Which kind of worm has a closed circulatory system? a planarian b fluke c pinworm d an earthworm