Many ancient monuments are made of marble. some are located in highly polluted cities. how might the pollution affect the monuments?

Are the earth's ocean floor and continents the same age geologically? why or why not?

Which statement best describes the relationship between an allele and a gene? question 1 a. an allele is a variation of a gene that can be expressed as a phenotype. b. an allele is the part of a gene that attaches to messenger rna molecules. c. an allele is a segment of a dna molecule that controls replication of a gene.

What are two examples of conduction that we use everyday