Approximately how many people were expected to get skin cancer in 2050 under the Montreal Protocol?

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

Why do we perceive objects as retaining their brightness under different lighting levels?

What molecules does hemoglobin decay into over time