_is a hormone which causes _to be broken down to form _.

Development of new communities in disturbed environments, such as a burned or a clear cut forest, is called

How does a gymnosperm prevent itself from pollinating the same tree

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