Please help me with this question

In the african savanna,more wildebeests are born than the environment can support. which is most likely to happen over a period of years as a result

Dna is colied into chromosomes in a cell

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