What does the prefix tri- in phosphate mean?

Which are observations about the tree on the right ,? check all that apply

Which of the following is not a defining characteristic of plants?

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