Convection in the upper mantle

magma injection at the spreading boundaries

gravity pulling the plates downward at subduction zones

these are three theorized causes of?

Apart of an ecosystem that can restrict the growth of a population is referred to as

What element does susan b. anthony include in this passage to strengthen her argument?

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.