The illustration below uses a model of a food web to show the feeding relationships in a salt marsh ecosystem. What is the purpose of such a model of a food web?

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

How do plants obtain more sunlight a.) they lean towards the light b.)they grow straight up c.) they only live in sunny areas, like the tropics d.) they stay low to the ground

When the oxygen produced by photosynthetic plants in the water dissolves in the water, which of these is being formed?