The structure that hotds two chromosomes together until they separate for cett divisionois 1.chromatid .
2.cytoplasm .
3.chromatin .
4.centromere

Which element provides strength to the exoskeleton of clams and oysters

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

Explain the significance of thesaurus geographicus