An important feature of modern classification systems is that they?
a)apply only to organisms that are alive today
b)group organisms that live in the same habitat
c)can incorporate new scientific discoveries
d)can predict the discovery of new species

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

We all have different forms of genes from our parent(s).what are these different forms called? a. alleles b. characters c. dna d. resources

Why do you suppose the structural polysaccharide cellulose does not contain branches?