Help pls thank you lol

Which of the following occurs after a natural or unnatural disturbance in an ecosystem

Which image shows labeled organelles that are present only in plant cells?

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