What happens to the population density and competition if the birth rate decreases?

Which one of these is a involving in both sexual and asexual reproduction

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

Which best describes carbon dioxide’s path out of the body